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strength degradation model

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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003382
EISBN: 978-1-62708-195-5
... on unidirectional static and fatigue properties. MRLife allows selection of failure criteria, strength degradation functions, and stiffness degradation functions. The strength-based residual strength model has shown good predictive capability for spectrum fatigue loading ( Ref 18 ). It is considered as a good...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006921
EISBN: 978-1-62708-395-9
... the hydrostatic design basis approach, Miner's rule, the Arrhenius model, and the Paris Law for fatigue crack propagation, are discussed. accelerated testing Arrhenius model chemical degradation environmental stress cracking fatigue crack propagation Miner's rule Paris law polymeric materials...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003706
EISBN: 978-1-62708-182-5
..., corrosion may degrade the static-strength capability of a structure. Such was the fate that befell a commercial airliner in 1981 ( Ref 1 , 13 ). Perhaps more perplexing, though, are the many corrosion and fatigue interactions. Only the first of the following definitions is standard: Corrosion...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
... of the structure to be knowingly degraded below ultimate strength (1.5 × limit). The damage-tolerance evaluation is merely a means of providing an inspection program for a structure that is not expected to crack under normal circumstances, but may crack in service due to inadvertent circumstances. If cracks...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006909
EISBN: 978-1-62708-395-9
... analytical (empirical, physical, or chemical) models. For the analytical model to be useful, the relationship between exposure and changes in material structure and properties should include degradation rates; dependence on environmental factors such as temperature, pressure, moisture content, or applied...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006802
EISBN: 978-1-62708-329-4
... of known cracking. This interpretation is incorrect. No regulations allow the strength of the structure to be knowingly degraded below ultimate strength (1.5 × limit). The damage-tolerance evaluation is merely a means of providing an inspection program for a structure that is not expected to crack under...
Book Chapter

By Bruce Craig
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003634
EISBN: 978-1-62708-182-5
... the classical features of embrittlement (that is, reduced load-carrying capability or fracture below the yield strength). This section classifies the various forms of hydrogen damage, summarizes the various theories that seek to explain hydrogen damage, and reviews hydrogen degradation in specific ferrous...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0009219
EISBN: 978-1-62708-176-4
... or strain levels are included. The article also summarizes the consolidation of fatigue data generated at different conditions. fatigue curve fatigue data analysis fatigue resistance fatigue strength strength degradation model FATIGUE DATA are subject to considerable scatter or variability...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003381
EISBN: 978-1-62708-195-5
... from damping characteristic improvements, strength degradations, and little change to moduli. If effects are present, lesser differences are usually seen on fiber-dominated properties versus resin- dominated properties. Exceptions occur when the interface between the fiber and resin is attacked...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003379
EISBN: 978-1-62708-195-5
... fails first, either by intent, by design error, or because of impact damage. The state of the modeling propagation and arrest of matrix damage follows. Comparisons of this physics-based approach are then made to empirically based failure theories. compression strength fiber-reinforced polymer...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006929
EISBN: 978-1-62708-395-9
... degradation of the plastic. Adding glass and stabilizers substantially improves the performance of polyamides in hot and humid environments. Some polyamides absorb less moisture and retain their properties longer under hot and humid conditions. PA 12 loses approximately one-third of its strength due...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003457
EISBN: 978-1-62708-195-5
...% limit load because of instability of the loading apparatus. Although the rudders were designed by stiffness considerations and only one residual strength test was conducted, the overall response of the rudder indicated that no degradation had occurred after 22,265 flight hours. B-727 Graphite-Epoxy...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006915
EISBN: 978-1-62708-395-9
... of fiber length on material strength. Source: Ref 36 Fig. 20 Barrier pigment effect. (a) Water passes relatively unobstructed through a polymer with spherical additives but (b) must travel around platelike fillers. Source: Ref 30 Fig. 17 Mechanical models and typical behavior...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006942
EISBN: 978-1-62708-395-9
... Continuous improvement After subject event This Volume provides an introduction to various degradation, failure, and analytical processes specifically addressing plastics and polymeric materials. This information serves as a fundamental tool set and background needed by the failure analyst when...