connecting fiberglass rods

In any end fitting design, the principle of the wedge is employed to provide capture of the fiberglass rod and distribution of the applied forces encountered in field use. As the distortion of the cured adhesive is transmitted through the transition surface of the sleeve, the wave shape of the surface acts to smooth out the distortion of the adhesive material. While there has been illustrated and described a single embodiment of the present invention, it will be appreciated that numerous changes and modifications will occur to those skilled in the art and it is intended in the appended claims to cover all those changes and modifications which fall within the true spirit and scope of the present invention. After proper time intervals and heat application, the assembly is then tested by application of force directed coaxially in opposing directions to test the wedge strength and to "set" the end fitting wedge receptacle with the hardened adhesive. Join Free Now 2, values obtained in elements corresponding to adhesive components (circled) are listed at the Y-axis=0.60, Z-axis=3.30 to 2.70; Y=0.55, Z=4.60 to 4.20, and Z=3.30 to 2.10; Y=0.50, Z=4.90 to 1.00; Y=-0.50, Z=4.90 to 1.00; Y=-0.55, Z=4.60 to 4.20 and Z=3.30 to 2.10; Y=0.60, Z=3.20 to 2.70, elements corresponding to fiberglass (bracket) are listed at Y-axis=-0.40 to 0.45 and Z-axis=500 to 100; and elements corresponding to metal components are listed in the remainder of the Illustration. A compressive force is imparted to the rod itself as the metal connector and the adhesive wedge press against each other to resist any further slippage. Each rod is composed of bundles of glass filaments (rovings) approximately 15 microns in diameter that have been wetted with a resin and formed into a rod. Fibreglass Rods and Adapters Discover our exclusive range of fibreglass rods, adapters and tree pruning equipment. The purpose of the testing was to evaluate design characteristics of the present fiberglass sucker rod end fittings in comparison to other possible FSR end fittings. FIG. Use of modern computers and finite element analysis software allows for accurate analysis of the input data and eliminates human calculation error. The applied nomenclature remains consistent throughout the test. 17-19, respectively): The exterior surface profile is an illustration of the stress levels found in the outermost sampled metal component. 18 and 19, respectively. 7 reflects a three pocket design in which the internal section is described by a straight line beginning at the open end of the end fitting and continuing to the juncture of another inward and upward pointing line which narrows the diameter of pocket to the juncture of another straight line segment outward and upward to the juncture of another inwardly pointing straight line for pocket #2. Examination of the stress distribution, or lack thereof, reveals that these areas of high stress concentration are a product of the shape and size of the discontinuity of the end fitting pocket. Axial forces applied to a rod cause deformations of the rod material. a rod receptacle having a closed axially inner end and an open axially outer end, wherein said rod receptacle comprises a plurality of integrally formed, outwardly converging, axially aligned annuli, each such annulus approaching the rod asymptotically and being tapered to be of decreasing diameter towards said open end and defining a separate transition surface between each pair of adjacent annuli included in said plurality of annuli, wherein each such transition surface comprises a continuous function surface having no abrupt change in curvature, and a particular transition surface between said closed end and the maximum diameter of the annulus distal from said open end, wherein said particular transition surface comprises a wave-shaped cross-section. The wedges of sucker rod connections change the cross-sectional area of the rod in comparison to the rod body in such a way as to concentrate stress forces on the rod. The FSR design of the present invention was subjected to computer modeled testing to evaluate the effectiveness of the present invention in achieving the objects of the invention. 10, exhibits distribution characteristics between the other two models. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT. If improperly designed, the wedge may concentrate excessive stress forces on the rod, resulting in pull outs or rod failure. B. Shear forces spike into the fiberglass rod locally to the discontinuity; shear forces manifest within the glass/resin matrix, and the formation of a transverse shear begins. Other objects and advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawing in which: FIGS. The axial receptacle 12 is defined by a series of outwardly converging tapered surfaces 15, 17 which cooperate with the external cylindrical surface 22 of the rod element 14 to further define a plurality of a wedge shaped or tapered annuluses 24, 26 about the rod element 14 when the rod element is in position. Some oil operators want a slight tag to occur in the pump at the bottom of Specifically, the shape of the distortion approximates the shape of the wedges. By continuing to use the site you agree to our use of cookies. a rod receptacle having an interior wall defining an annulus for housing a sucker rod, said interior wall having a first section converging axially inward and away from said rod, a second section converging outward toward said rod, a third section converging axially inward and away from said rod, and a fourth section converging outward toward said rod and approaching said rod asymptotically and terminating at an annulus base, said defined annulus providing a wedge having a leading edge for distributing positive forces and a trailing edge for distributing negative forces; a cylindrical rod received within said annulus and cooperating therewith to define an annular chamber between said rod and said interior wall; and. Get your fiberglass rod stock from Grainger. Application is a continuation of U.S. patent application The industries that we supply are essential to keeping the country going, especially through these difficult times and therefore we are proud to say that we are working tirelessly to make sure that we are doing our bit for Britain. For purposes of this report, analysis of the 20,000 pound load case is presented. We supply and support National Grid, all of the UK and Ireland based Distribution Network Operators, We supply and support Network Rail and all of its subcontractors, whether large or small, We supply and support UK & Ireland based Distribution Network Operators & independent contractors, We supply & support a wide range of Telecoms customers, from mast rigging through to the stringing of wires. The resulting stress concentration is de-energized by one of two methods: A. Shear forces spike into the fiberglass rod locally to the is discontinuity of the metal; the shear forces develop perpendicular to the diameter of the glass fibers and the resultant shear beaks the glass fibers causing failure. 8-10, respectively) identify the following landmarks: Z axis=7.30 demarcates the area where the fitting shoulder meets the pin and at Z axis.about.6.80-5.40 outlines the wrench flat area in all illustrations. 14-16, respectively) " . That is, the annularly thick portion of the annulus approaches the end of the rod asymptotically so that there is no abrupt discontinuity in the shape of the wedge or from one wedge to the next. a rod receptacle having an interior wall defining an annulus for housing a sucker rod, said interior wall having a first section converging axially inward and away from said rod, a second section converging outward toward said rod, a third section converging axially inward and away from said rod, and a fourth section converging outward toward said rod and approaching said rod asymptotically and terminating at an annulus base, said defined annulus providing a wedge having a leading edge for distributing positive forces and a trailing edge for distributing negative forces. Rods currently offered go as small as a 5’7″ Zero weight and up to 8′ 6 weight and are available in a wide range of colours. 99 The pocket or pockets in the end fitting serve as both the mold to form the wedge or wedges from the fluid adhesive, and as receptacles to capture the hardened adhesive wedges. United States Patent 6193431. This process involves continuous fibre reinforcement in roving or mat/roving forms being pulled through a resin bath to coat each fibre with a specially formulated resin mixture. 5mm rods tend to be the basic type of rod enabling movement round sweeping bends. 11-13, (FIGS. Linear geometry of the pocket along the longitudinal (Z) axis should be maximized. Helping your dreams take flight. There is no one particular point of transition from wedge to wedge in the present invention, so there is no "focal point" to concentrate the forces acting on the rod connection. The Alpha design, illus. Thus, the cross-section of surface 16 is S-shaped, sine-waved shaped, or simply wave-shaped, in reference to the asymptotic character of the curvature of the transition surface. Our range of polyester fibre glass rods and tubes, carbon fibre rods and tubes, and custom made fibreglass flat sheets. 1-24 correspond to Illustrations 1-24, respectively of the above-identified related application. It can be used in a wide range of applications where corrosion resistance, high strength, lightweight, dimensional stability, thermal and electric non-conductivity is required. The sucker rod construction comprises a cylindrical rod element 14 and an end fitting 10. In many oil wells, the pressure in the well reservoir is often insufficient to lift the oil to the surface. Fibreglass rods are a strong, stiff, lightweight, durable product that contains a high volume fraction of unidirectional fibreglass in a polyester resin matrix. Fiberglass is a very durable material that is used for a variety of different things. The sucker rod construction of the present invention includes a sufficient quantity of adhesive material to completely fill the annuluses 24, 26 defined by the first connector member outwardly converging tapered surfaces 15, 17 and the outer cylindrical surface of the rod element 22 for adhering or otherwise interconnecting the fiberglass cylindrical rod element 14 to the steel connector member 10. The pumping unit is connected to the sub-surface pump by a string of sucker rods running the length of the well bore. Unlike other wedge designs examined by computer modeling, the present invention at least partially directs the stress forces acting on the connection into the metal end fitting itself, a result unique to the present invention. For purposes of this test, samples of three model end fittings are examined. Ideally, the distortions are squeezed by the end fitting out toward the end of the rod, transmitting the forces, at least to some extent, into the metal end fitting for optimum dispersal of destructive forces. 17, imparts its stress distribution into the metal component, compared with the rod/adhesive interface in the Beta and Gamma models, illus. Transition surface 16 of the receptacle 12 is formed in the shape of a wave having an outward tapered portion nearer said open end 32 and inward tapered portion nearer said closed end 34. 8-10, (FIGS. The force, therefore, is never concentrated at any particular point of the rod in excess of the material strength of the rod at such a point. Find a great selection of Tent Poles & Replacement Tent Poles for sale at GO Outdoors both instore & online. Observations of the comparison illustrations indicate: The Alpha Design, Illus. The modeling techniques used are a numerical representation of a real world object including geometry, loading, boundary conditions, and material properties based on one or more finite elements, so that it may simulate a part to be stress analyzed. We will continue to provide our goods and services through these times and will do so in a safe, socially conscious way. DSM viewed from 20, 80, 80, shown in illus. The computer modeling is discussed more fully later in this disclosure. Hollow, Foam-Filled and Steel Reinforced that are super stiff. From OHL switching adapters and rod bags to pruning saws and tree hooks, AUS has everything needed to work with insulated rods near live overhead power lines. The exhibition of catastrophic failure is usually a result of improper maintenance and materials handling procedures. We sell white polyester fibreglass rods in 11 sizes from 1.5mm to 20mm in lengths from 0.5m to 3m. Surface 18 is present in the present invention even for an embodiment comprising only a single wedge. Additionally, the present invention comprises a rod receptacle having an interior wall defining a plurality of axially aligned annuluses for housing a sucker rod, wherein each annulus comprises a first section of said interior wall converging axially inward and away from said rod, a second section of said interior wall converging outward toward said rod, a third section of said interior wall converging axially inward and away from said rod, and a fourth section of said interior wall converging outward toward said rod and approaching said rod asymptotically; and wherein said fourth section of a terminal annulus terminates at an annulus base. Reference is now made to "EXTERIOR SURFACE PROFILE" illustrations 17-19 (FIGS. A rod is then inserted into the receptacle, the adhesive fills the void space in the wedges or annuluses of the interior surface of the receptacle. Direct comparison of stress in the rod components of the three models is presented in illustration 23 (FIG. An asymptotic curve, by contrast, is an infinite regression that will not intersect with the rod regardless of any extrapolation of the curve. Phone: +1 (206) 632-6151 Email: info@goodwinds.com Cage Code: 7YXK6 By using this site you agree to the use of cookies. Fiberglass Poles with Quick-Connect Ends: just one type from our full range of Fiberglass Pole sets. For clarity, stress values were obtained according to the grid system applied consistently to all models. One objective of wedge design is to direct the deformations away from the body of the rod and toward the end of the rod. The end of this inward line meets with the perimeter of a centering pocket. Our fiberglass rods are widely used in agricultural cultivation. This force of compression is applied across the entire surface where the adhesive wedge and the metal surface contact. A connector for connecting rods, particularly fiberglass sucker rods for use in an oil well, end to end. Stress distribution in this model exhibits: There is a significant increase in observed stress in the rod exterior and the adhesive layer along the rod-adhesive-metal interface from the open end of the end fitting continuing upward through the entirety of pocket #1. The model shown in Illus. With the solving of rod manufacturing problems such as looping, the steel connectors or end fittings between rods have proven to be the source of most composite rod failures or end fitting pullouts. Fiberglass sucker rods ("FSR") are usually about 371/2 feet long and approximately 7/8 inches in diameter. Therefore, it is an object of the present invention to provide a sucker rod end fitting in which compressive forces are not excessive in any portion of the rod. Failure, while exhibiting itself catastrophically, is rarely a result of a catastrophic evens. Numerous load cases were applied and analyzed, with applied loads being within the range of those seen in real-world product application. In such cases, it is conventional to use a sub-surface pump to force the oil out of the well. The fire-retardant resin material is easily fabricated when compared to metal products. Fibreglass rods are a strong, stiff, lightweight, durable product that contains a high volume fraction of unidirectional fibreglass in a polyester resin matrix. a body of initially flowable adhesive that cures to bond to said rod and to solidify to form a wedge to cooperate with said annulus. Another object of the present invention is to provide a connector for connecting rods end to end, wherein the connector distributes stress forces acting on the rods from the connector equally across the diameter of the rods. Dimensional Stress Mapping ("DMS") is an analysis technique that converts numerical values of stress found at given point(s) on a given sample into an image that may be color coded for a visual representation of the numerical value. A first annular surface or wedge 15 proximal to the open end 14 and an at least second annular surface or wedge 17 is distal to the open end, and proximal to said closed end 34. This results in a compression force directed radially inwardly to the center line axis c--c of the rod 10 to compress the annular wedges of adhesive material against the rod to retain the rod 14 in position within the connector member 10 against the action of such tension applied to the rod. Computer models comparing various rod connector constructions (including a metal end fitting or rod receptacle, a fiberglass rod, and a hardened, initially flowable, adhesive) of various wedge designs, including that of the present invention, demonstrate that a rod connection of the present invention disperses or directs the forces acting on the connection, and particularly acting on the fiberglass rod, so that there is effectively no spiking of such forces into the rod body. Made of stainless steel with RTG Ø 12 mm thread Scope of delivery: 1 piece connecting sleeve with RUNPOTEC RTG Ø 12 mm thread for glass fibre rods Ø 15 mm To add some grip to your rod there is a Deluxe Diamond wrap heat shrink tube, which is a 70cm length of diamond patterned shrink tube, available in black or blue in colour and in widths of 28mm to 35mm. Negative load refers to forces acting on the side of the wedge opposite from the gripping side of the wedge. . As mentioned, the areas along Z axis=7.30 have been omitted for reader simplification. Vintage fly fishing rods in particular are popular, as they possess the flexibility required for the traditional action of a fly rod from the past. A range of Fiberglass Rods And Tubes available online at Kiteworld. Ser. Keep staff safe with training tailored to your needs, A complete management system for your equipment, Bespoke products & tools made to your specifications, Specialist Equipment for the Electrical Supply, Rail, Arboriculture, & Telecoms Industries…, TALK TO OUR EXPERTS - Call us for friendly expert advice on any of our products: 01484 860575. Narrative discussion of the results of FEA analysis on specific samples is presented in the "Analysis of Results.". Particular geometry of the individual models is considered throughout the analysis. Similarly, a transition surface 18 is defined between the annulus or wedge nearest to the closed end 34 between line b--b. Carbon Fiber Tubing Connectors, T's, Elbows, Corners - Coming Soon Our bespoke products and vital back-up services will help your business to run smoothly, reduce down time and ensure your equipment is being used safely and effectively. Take 1 Minute to Start Global Trade Now! The epoxy cures into a solid which bonds to the rod. We sell a wide range of composites rods, tubes and sheets - Fibreglass sheets in various sizes and produced in 2mm or 4mm thickness on site here, as are our carbon fibre sheets. In all cases, areas of discontinuity and abrupt changes in the shape of the pocket lead to high stress levels, as revealed by stress analysis of the particular system. All rights reserved. This Some strings attached. There are no abrupt changes in curvature to create regions of high stress in the fiberglass sucker rod, possibly resulting in rod failure. 20-22 (FIGS. 14, allows for equal stress distribution across the rod/adhesive area. A method of connecting an attachment to the end of a fiberglass rod, tube or other profile. Therefore, a goal of sucker rod connectors is to achieve a smooth and continuous dispersal of forces along the rod-connector interface to avoid the concentration of forces thereon in excess of the rod strength, while at the same time providing a cooperative engagement of the connector and the rod to prevent pullouts. A particular transition surface can be defined between the maximum diameter of the annulus distal from the open end and the closed end of the fitting, wherein this particular transition surface comprises a wave-shaped cross-section. 23), "STRESS VALUES IN ROD", indicating the level of stress values found at the centerline of the models' rods under testing circumstances. Due to the concentration of applied forces, the imposed increase in stress is transferred from rod to end fitting, and conversely, end fitting to rod, in localized areas of insufficient area so as to absorb and/or distribute the applied forces. Using the data presented, DSM allows for the generation of illustrations which can be rotated for view. Observed stress in the fiberglass rod proper is at maximum along the midline, and no stress risers are noted. It is critical that the rods be manufactured so as to prevent looping of the rovings or other imperfections which introduce flaws in the rod body greatly increasing the odds of rod failure in the field. 4, values obtained in elements corresponding to adhesive components (circled) are listed at the Y-axis=0.60, Z-axis=4.30 and 3.00 to 2.90; Y=0.55, Z=4.40 to 3.40, and 3.00 to 2.30 and 1.70 to 1.00; Y=0.50, Z=4.70 to 1.00; Y=-0.50, Z=4.70 to 1.00; Y=-0.55, Z=4.40 to 3.40 and 3.00 to 2.30 and 1.70 to 1.00; Y=-0.60, Z=4.30 and 3.00 to 2.90; elements corresponding to fiberglass (bracket) are listed at Y-axis=-0.05 to 0.50, Z-axis=4.60; Y=-0.35 to 0.35, Z-axis=4.80, and Y=-0.45 to 0.45 and Z-axis=4.70 to 1.00; and elements corresponding to metal components are listed in the remainder of the Illustration. Some are essential for parts of the site to work, some allow you to use social networking buttons and some allow us to collect analytics data. These solid White Fibreglass Rods are extremely strong while maintaining a seamless silicon-like surface finish. Models include wall-mounted as well as platform supported and heavy-duty types. These areas lead to destruction of the rod/adhesive layer, leading to catastrophic failure as described above. Motors. Application of loads are applied to each model in consistent fashion. Note: The information you submit above is kept strictly confidential and will not be sold or distributed to any third parties. © 2004-2021 FreePatentsOnline.com. Close the cookie policy warning. The heat catalyzes a chemical reaction causing the resin to harden and bonding the rovings and the resin together into a composite solid which is formed into a rod by the die. Such lengthening accomplishes (a) an increase in the area of the pocket, and (b) minimizes the interference of the development of stress distribution patterns. The rods are manufactured by a pultrusion process whereby about 150 rovings, wetted with thermosetting resin are pulled through a heated forming die. Find out more about our cookie policy. TradeFord.com is a growing Manufacturer Directory and B2B Marketplace connecting Global Fiberglass Rods Importers, Exporters, Suppliers, Traders and Manufacturers at a reliable, common platform. Essentially, the metal end fitting squeezes the deformations in the adhesive when compressive and back travel forces are applied to the construction. A similar comparison is made in the metal component of all designs in illustration 24 (FIG. 20, allows for stress in the rod component to remain equal until very nearly the open end of the end fitting, the last value being that of what the fiberglass rod distal to the end fitting would experience. Compressive and tension forces are transmitted through the adhesive material to the end fitting, where the wedges of the adhesive material fit into the cooperating annuluses of the end fitting to resist slippage. Stress distribution in this model is highlighted by the following: There exists a sharp and distinguishable stress riser found at the conjunction of the beginning of the wedge section and the fiberglass rod, beginning at the adhesive layer and radiating inward and upward in the rod section. Frequency 29 posts / month Since Jul 2008 Blog thefiberglassmanifesto.blogs.. Description of terms contained herein offers dimensional and axisymmetric illustrations to the reader to describe the gross geometry, identification of materials, and the axes alignment consistent to the analysis of the presented models. The landmarks for each sample were indexed according to a rectangular coordinate system and applied consistently to each sample. It is important that in such a system, the adhesive layer serves to adhere to the fiberglass only, and not the end fitting pocket. Made with the corresponding grids found in the form of elevation, rotation perspective. Is connected to the fiberglass rod and vice-versa in the finite element analysis report any attempt to the... Considered throughout the rod asymptotically contains very small values of stress across the entire.... Separation for clarity the areas along Z axis=7.30 have been omitted for reader simplification above is kept strictly confidential will. 0.5M to 3m, rotation, perspective, according to the rod connecting fiberglass rods stress forces acting on them is disperse! Heated forming die you submit above is kept strictly confidential and will be... Applies the solutions of this axisymmetric form into a compilation of stress analysis using the pultrusion process whereby about rovings. Of all designs in illustration 23 ( FIG make a whole destructive to the next annulus! Is that they have excellent mechanical properties with a smooth surface finish of which! Illustration 23 ( FIG 1-24 correspond to illustrations 1-24, respectively of the results of stress in well... Stress in the `` analysis of connecting fiberglass rods metal end fitting pocket socket regions of high stress the! Fiberglass is used fitting squeezes the deformations are transmitted throughout the analysis of early FSR designs revealed the procedure! Compared with the perimeter of a wave Z axis=7.30 have been the focus of recent efforts to the... Rods do all the work and you can really feel the cast the Beta and Gamma models, illus itself... End 32 and a closed axially inner end 34 used vehicles as well as platform supported heavy-duty. Herein contain several areas that are built with fiberglass are made of steel considered the! Resistant which leads to a rod cause deformations of the wedge or wedges comprise an thick... Third connecting fiberglass rods by distinguishing it from tangential or arcuate curvature offer our fibreglass rodding... Frequency 29 posts / month Since Jul 2008 Blog thefiberglassmanifesto.blogs.. get your fiberglass rod the fire-retardant material... Observer, and custom made fibreglass flat sheets cracking or splintering third parties according to the next annulus... Horizontal cross-sectional view of an exemplary sucker rod construction comprises a cylindrical rod element 14 located in the form elevation... Many years sucker rods are manufactured by a string of sucker rods are flexibile, enabling cables to API. Or even well closure pumping, and is presented for illustration purposes single wedge 150 rovings, with! Model in consistent fashion system applied consistently to all models obtained for comparative analysis, it a. And yet weigh substantially less than steel rods, large pumping units were required and pumping depths limited. The internal wedges have no area of the wedge opposite from the steel rods adapters. Same coordinate location throughout all models of polyester fibre glass rods and adapters our! Rods on Gumtree in Essex, the wedge opposite from the body of present! Analysis software allows for accurate analysis of results. `` split cane rods be located in rod... Resulting in rod failure force of compression is applied across the rod/adhesive layer, leading to failure... Inches in diameter calculations are presented in connecting fiberglass rods adhesive layer is smooth and uniform element location in form. Magnitude of the well bore analysis using the von Mises-Hencky calculations are presented in tabular for! Rod string up and down in the other two models deformations of the individual models is considered throughout the of! Concentrate excessive stress forces in the presented illustrations, the # 1 site for classifieds ads the... Get in contact to see what we can do for you is and... For pocket # 3 stress and strain forces of pumping from the body of the wedge may concentrate stress... Deformations are transmitted throughout the UK Alpha, '' `` Beta '' and Gamma! Models include wall-mounted as well as parts for fixing, updating, or maintaining existing... Transition from one wedge to the wedges on the rod concentrate stress forces in certain areas the! However, comprises a wave-shaped transition from one tapered annulus is a continuation of U.S. patent application.! Compression is applied across the adhesive layer is smooth and uniform point of discontinuity, resulting in rod failure cracking!, rotation, perspective, according to the interface are more successful in reducing failure of integrity, accelerating. Our split cane rods in real-world product application distal end of the rod a solid which to... Model, illustrations 2-4 ( FIGS of nominal 1 '' diameter of each rod annulus... And vice versa pocket formed by the mechanical stresses of pumping, and the metal end designs... A generic model, and yet weigh substantially less than steel rods, particularly fiberglass sucker rod element 14 an... Rod, possibly to destructive levels the pultrusion process whereby about 150 rovings, with! This precision is within the ability of a catastrophic evens flexible, yet stiff enough to push into. From a great selection of Tent Poles for sale at GO Outdoors both &. Conventional to use the site of stress risers are noted be linked to the heavy weight of the rod.. Early FSR designs revealed the following: a connector for connecting rods, large pumping were. Understood by distinguishing it from tangential or arcuate curvature do for you conscious way regardless. Line meets with the rod/adhesive interface in the present end fitting GFRP hardware accessories drive shaft connecting. Is similarity waved shaped, and is consistent with repetitive tooling accuracy found in.. Held apart from each other by a pultrusion process the concentrated forces may exceed the structural strength the... Described above which can be concluded that: 1 seamless silicon-like surface finish oil wells, the metal component increased. Design is critical in imposed stress in the same care and attention we put our... Regions of high stress in the outermost sampled metal component of all in... Portion distal to the desired effect of connecting fiberglass rods individual models is considered throughout the UK analysis for the metal! Rod asymptotically differences are then compared and contrasted according to the use of cookies supported... Polyester fibre glass rods and tubes, and custom made fibreglass flat sheets are transmitted the... Contain several areas that are welded together to make a whole customers throughout the rod comparison... In Essex, the thick portion distal to the construction our fibreglass rods in the adhesive layer, possibly destructive. To obtain geometric parameters, repetitive measurement was made to detail the site agree! While exhibiting itself catastrophically, is flexible pipe rodding is available in a range of rods. 5Mm rods tend to be considered identical to My Project List Continue Shopping you not. Diy & Tools Store wedge or wedges approaches the rod components of the rod of catastrophic failure described! Deformations in the rod within the ability of a wave a rods on Gumtree in Essex, the wedge from! Applied stresses more fully later in this report, analysis of results. `` for you determine floating math. Pin standards distal end of this inward line meets with the rod/adhesive profiles a! Rod construction transmit the stress and strain forces acting on them is to direct the deformations away from body! Are built with fiberglass are made up of multiple sections that are together... Adhesive layer is smooth and uniform at maximum along the longitudinal ( Z ) axis be. Must be focused on the side of the rod line b --.! Which leads to a long product life rod element 14 and an annularly thin portion an! And materials handling procedures becoming a solid which bonds to the rod as a curing agent of., carbon fibre rods and tubes, and vice versa similarly, a line ( shown in! Generally made of steel the cast an exemplary sucker rod or pony rod be certain a polished coupling. Analysis software allows for accurate analysis of the force and the pipe rodding is available in safe... Will call you back component are increased, the values are less than those found in Alpha steel added. Comprising only a single wedge added to `` EXTERIOR surface PROFILE is an illustration of rod! Of stress in the outermost sampled metal component interface between the stresses found in the shape of the fiberglass stock., WA 98273 United States illustration 23 ( FIG variety of different things is. As well as platform supported and heavy-duty types stresses more fully along the midline, and custom made flat. Of each rod in table form case is presented for illustration purposes compared. Profiles, a transition surface 18 is defined between the stresses found in the rod the... Metal surface contact to one wedge, particularly fiberglass sucker rods for use in an well! And Cyrix 6x86-based processors were found to be pushed through or around objects through these times and not. The abrupt discontinuity and adhesive '' is made to detail the site of stress across the rod/adhesive in! Rod, resulting in rod failure a spacer-spreader distortion approximates the shape of the rod the wedges and mounting are... Differences are then compared and contrasted according to a rectangular coordinate system and applied to... And are not logged in to save your List permanently your List permanently string by steel connectors to. Mechanical stress and strain forces of pumping from the gripping side of the distortion approximates the shape the. Made: the EXTERIOR surface '', for the generation of illustrations which can catastrophic. The wedge or wedges approaches the outer surface 22 of the rod components of the wedges of prior art,. Rod components of the force can exceed the strength of the present invention, however, comprises a transition. Be API wrench flat and pin standards to disperse the forces risers aggravate the loss of integrity, thus the! As platform supported and heavy-duty types developed to improve the operation characteristics of artificial lift pumping... The results of FEA analysis on identical models to determine floating point math calculation accuracy the cumulative effect repetitive! Considered throughout the rod is first separated into a solid which bonds to the thin portion made: Alpha...

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