Polymer Fatigue Testing

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• Automotive Fatigue Life and Dynamic Mechanical Analysis of a Matrix Polymer
  Many exterior components on modern automobiles are fabricated from advanced polymer and composite materials. Knowledge of the strength and durability of these raw materials is becoming increasingly important for suppliers who support the automotive industry. These materials must have...
• A Math-Based Methodology for Fatigue Longevity Prediction of 3D Woven Fiberglass Reinforced Vinyl-ester Composites (.pdf)
  . for. such. applications. is. the. mechanical fatigue longevity. In this work, a predictive. Polymer matrix composites (PMC) are finding. math-based technology has been developed as a virtual. increased applications in automotive industry due to. engineering tool for the design of 3TEX 3Weave. /vinyl...
• MICRO: Testing liquid-handling system components to ensure purity and reliability
  for fatigue failure of fluoropolymer diaphragms. In response to these industry concerns, component supplier Saint-Gobain Performance Plastics (Garden Grove, CA) has adopted a testing program for its components used in high-purity semiconductor applications. This article describes the testing program...
• Testing to Improve the Durability of Artificial Heart Valves
  valves. However, they sometimes involve side effects with irregular blood flow and clotting of blood around them. Bioprosthetic valves have better hemodynamic (blood flow) properties, but are more susceptible to wear as a result of material fatigue. Polymer trileaflet (PT) valves offer natural...
• Artificial annulus fibrosus model
  are inadequate because of their poorly matched mechanical properties. CPG has. developed a more relevant composite structure that wil simplify fatigue testing of these devices. Description. The CPG AF analog has anisotropic properties and. non-zero permeability to more closely model native AF...
• Fractography of Metals and Plastics (.pdf)
  common to both metals and plastics include ductile overload, brittle fracture, impact, and fatigue. Analogies can also be drawn between stress-corrosion cracking (SCC) of metals and stress cracking of polymers. Other metal/plastic failure analogies include corrosion/ chemical aging, dealloying/ scission...
• Tribometer Lifetime Study of Wheel Bearings
  the load. If all the balls are in contact and carry the load then the load zone is referred to as being 360 degrees. Within the industry, the bearing life is defined as the length of time, or the number of revolutions, required to produce a fatigue spall of a size corresponding to an area of 6 mm2...
• The glued together car body
  techniques. Stress raisers compromise vehicle durability and safety shortening fatigue life and promoting stress corrosion within the basic body structure. To counteract this, designers typically size panels to withstand peak stresses. This results in panels being significantly thicker than would...
• MICRO: Product Technology News (July '2000)
  . It also resists solvents, alkaline substances, oils, greases, petroleum products, fungi, and mold. It can tolerate repeated flexing without suffering fatigue. Semirigid and flexible grades are available in sizes ranging from 1/8- to 1-in. OD, with tolerances of 0.001 0.003 in., depending...
• Strength and Reliability of Silica Optical Fibers in Automotive Communication Networks (.pdf)
  ) that restricts both the fiber length and minimum bending radius (typically,. >25mm).2. Proposed solutions to the limitations of plastic optical fiber include various glass optical fibers, particularly polymer-. clad silica fibers generically referred to as "PCS" fibers. This fluoroacrylate-coated glass fiber...

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