environmental+stress+cracking

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• Environmental stress cracking — (ESC) is one of the most common causes of unexpected brittle failure of thermoplastic (especially amorphous) polymers known at present. Environmental stress cracking may account for around 15 30% of all plastic component failures in service.H. F …   Wikipedia

• Environmental stress cracking — Wird ein Kunststoff an der Luft unterhalb seiner Streckgrenze mechanisch belastet, so können nach einem bestimmten Zeitraum, der sehr lang sein kann, Spannungsrisse auftreten. Ursache können innere oder äußere oder eine Kombination beider… …   Deutsch Wikipedia

• Environmental stress fracture — In materials science, environmental stress fracture or environment assisted fracture is the generic name given to premature failure under the influence of tensile stresses and harmful environments of materials such as metals and alloys,… …   Wikipedia

• Stress corrosion cracking — (SCC) is the unexpected sudden failure of normally ductile metals or tough thermoplastics subjected to a tensile stress in a corrosive environment, especially at elevated temperature (in the case of metals). SCC is highly chemically specific in… …   Wikipedia

• Season cracking — The problem of season cracking is known from brass cartridge failures during the monsoon season in India in the 1920s, failures which were caused by attack of the metal by ammonia. The edges of rifle cases cracked and could cause misfiring of… …   Wikipedia

• Ozone cracking — in natural rubber tubing Cracks can be formed in many different elastomers by ozone attack, and the characteristic form of attack of vulnerable rubbers is known as ozone cracking. The problem was formerly very common, especially in tires, but is… …   Wikipedia

• ESCR — Environmental Stress Cracking Resistance (Miscellaneous » Plastics) …   Abbreviations dictionary

• Polymer degradation — is a change in the properties tensile strength, colour, shape, etc of a polymer or polymer based product under the influence of one or more environmental factors such as heat, light or chemicals. These changes are usually undesirable, such as… …   Wikipedia

• Forensic polymer engineering — The study of failure in polymeric products is called forensic polymer engineering. The topic includes the fracture of plastic products, or any other reason why such a product fails in service, or fails to meet its specification. The subject… …   Wikipedia

• Polymer — Appearance of real linear polymer chains as recorded using an atomic force microscope on surface under liquid medium. Chain contour length for this polymer is 204 nm; thickness is 0.4 nm.[1] A polymer is a large molecule (macromolecule …   Wikipedia

• Forensic chemistry — is the application of chemistry to law enforcement or the failure of products or processes. Many different analytical methods may be used to reveal what chemical changes occurred during an incident, and so help reconstruct the sequence of events …   Wikipedia