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damage tolerance

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540215
EISBN: 978-1-62708-309-6
... Abstract This chapter presents a fracture-mechanics-based approach to damage tolerance, accounting for mechanical, metallurgical, and environmental factors that drive crack development and growth. It begins with a review of stress-intensity factors corresponding to a wide range of crack...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610303
EISBN: 978-1-62708-303-4
... control plans optimized for different circumstances, examines the damage tolerance requirements used by different industries, and discusses various approaches for fatigue design. damage tolerance analysis fracture control proof testing FRACTURE CONTROL is the concerted effort to ensure safe...
Image
Published: 01 November 2010
Fig. 14.20 Use of stitching to improve damage tolerance. Source: Ref 18 More
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Published: 01 November 2012
Fig. 30 Use of stitching to improve damage tolerance. Source: Ref 16 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
..., damage tolerance, and testing and certification. composite laminates continuous carbon-fiber composites continuous-fiber polymer-matrix composites damage tolerance fatigue failure mechanisms A COMPOSITE MATERIAL can be defined as a combination of two or more materials that results...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... Abstract This chapter examines the static, fatigue, and damage tolerance properties of glass, aramid, and carbon fiber systems. It also explains how delaminations, voids, porosity, fiber distortion, and fastener hole defects affect impact resistance and strength. aramid fibers carbon...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870489
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses design and certification considerations, including materials and process selection, the building block approach to certification, design allowables, and design guidelines. It also includes information on damage tolerance and environmental sensitivity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540319
EISBN: 978-1-62708-309-6
... loading can lead to delamination, the primary failure mode of most composites, and describes some of the methods that have been developed to improve delamination resistance, assess damage tolerance, determine residual strength, and predict failure modes. composite laminate damage tolerance...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030177
EISBN: 978-1-62708-349-2
... in a variety of aircraft applications. To improve the damage tolerance of composite materials even further, an engineering approach to toughening was used to modify the highly stressed interlayer with either a tougher material or through the use of preformed particles, leading to the third generation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030193
EISBN: 978-1-62708-349-2
... 5 ). The impact parameters that influence the damage mechanism are the area, velocity, and mass of the projectile that impinges on the composite part. Material characteristics that affect the damage tolerance and mechanism of failure are the type of fiber, fiber tow structure, fiber volume, weave...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030001
EISBN: 978-1-62708-349-2
...-carrying constituent of the composite, while the role of the polymer matrix is to transfer the load between fibers as well as provide corrosion resistance, damage tolerance, and thermal and environmental stability ( Ref 1 ). Fiber-reinforced polymeric composites are developed from thermoplastic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.9781627083492
EISBN: 978-1-62708-349-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
... integrity program (ASIP) in 1958 F-111 aircraft No. 94 wing pivot fitting 1969 Fatigue failure due to material defect in high-strength steel Improved inspection techniques Change from fatigue “safe-life” to damage-tolerant design philosophy Development of materials with improved toughness Seam...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870001
EISBN: 978-1-62708-314-0
... to tolerate stress concentrations, as shown in Fig. 1.16 . The characteristically brittle composite material has poor ability to resist impact damage without extensive internal matrix fracturing. Fig. 1.15 Comparison of typical stress-strain curves for a composite laminate and aluminum alloy sheet...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240243
EISBN: 978-1-62708-251-8
... the basis for what is known as the damage-tolerance design approach. Finally, in region III, the crack growth rate accelerates, since the fracture toughness of the material is approached, and there is a local tensile overload failure. 14.7 Crack Closure During fatigue cycling, the crack growth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230339
EISBN: 978-1-62708-298-3
... excessive dimensional tolerance problems (except for holes in thick sections) [ Norwood 1984 ]. Typical machining damage ranges from 0.025 to 0.10 mm (0.001 to 0.004 in.) for most machining and may extend to a depth of 0.50 mm (0.02 in.), depending on the machining method [ Gallagher and Hardesty 1989...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
.... Typically, damage tolerance is a resin-dominated property. The selection of a toughened resin can significantly improve the resistance to impact damage. In addition, S-2 glass and aramid fibers are extremely tough and damage tolerant. During the design phase, it is important to recognize the potential...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280353
EISBN: 978-1-62708-267-9
... generated. Potential sources of superalloy data Name Aerospace Materials Handbook Mil-Hdbk-5H Damage-Tolerant Handbook Atlas of Stress-Strain Curves Atlas of Creep and Stress-Rupture Curves Atlas of Fatigue Curves Atlas of Stress-Corrosion and Corrosion Fatigue Curves ASM Handbook, Vol 1 20 Materials...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870119
EISBN: 978-1-62708-314-0
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320133
EISBN: 978-1-62708-347-8
... was conducted. The equipment alignment of the package was found to be within the allowable tolerance. Also, no visible damage of any component was noticed. This led the inspection toward the internal components of the gearbox. Visual inspection of the disassembled gearbox revealed severe mechanical damage...