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dimensional constraints

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... proposed remedies to prevent additional failures. molds thermal fatigue fracture dimensional constraints electroformed nickel cracking distortion finite element modeling thermal stress nickel (commercially pure nickel) Introduction Experiment Finite Element Modeling Conclusions...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... is to introduce the subject of fractography and aspects of how it is used in failure analysis. Fractography is the science of revealing loading conditions and environment that caused the fracture by a three-dimensional interpretation of the appearance of a broken component. If the specimen is reasonably well...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006800
EISBN: 978-1-62708-329-4
... depends on a thorough understanding of the service environment and advocates choices based on properties that satisfy those performance needs. After the component is envisioned, the environment is evaluated, and the constraints are applied, the design concept (including preliminary selection of materials...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... support areas), energy or material flows, and physical matings or other spatial requirements (e.g., certain spaces may be unavailable to the part). The types of dimensional features that are defined during configuration design may include ( Ref 4 ): Walls of various kinds, such as flat, curved...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... the modeling and prototyping of new designs of parts from designs developed in computer programs. Distributed computing and dedicated computation capability are critical in the AM process, because each AM machine needs to form the part digitally, transferring the three-dimensional (3D) computer model...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003530
EISBN: 978-1-62708-180-1
...” in this Volume). This section describes the underlying fundamentals and the relevance and necessity of performing proper stress analysis in conducting a failure analysis. Both plane stress and plane strain are explored, and instances in which seemingly appropriate two-dimensional (2D) analyses lead...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
.... The purpose of this article is to introduce the subject of fractography and how it is used in failure analysis. Fractography is the science of revealing loading conditions and environment that caused the fracture by a three-dimensional interpretation of the appearance of a broken component. If the specimen...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... and plane strain are explored, and instances in which seemingly appropriate two-dimensional analyses lead to erroneous results are presented. Three-dimensional stress transformations are discussed, and a procedure to obtain the principal stresses and associated directions as well as the maximum shear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001601
EISBN: 978-1-62708-235-8
..., economical metal forming technology that can meet the challenging requirements of high specific strength, close dimensional tolerances, and excellent surface finish demanded by the defense and aerospace industries. The relatively low tooling cost and remarkable material utilization due to chipless metal...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003502
EISBN: 978-1-62708-180-1
... Clarity of Function Safety Selection of Materials, Products, and Parts Transportation Issues Management Control Design Team Communication Problems Time and Money Constraints In coming up with a design that meets the user's needs in the best way possible, trade-offs must be made...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... conditions together with the constraint introduced by the presence of the imperfection (i.e., the stress-intensity, or K , field) Metallurgical structure These factors are described in the section “Fractures at or near Stress Raisers,” which is then followed by a root-cause failure analysis case...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... loading conditions together with the constraint introduced by the presence of the imperfection (i.e., the stress-intensity, or K , field) Metallurgical structure These factors are described later in this article, followed by a root-cause failure analysis case history to illustrate some...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001340
EISBN: 978-1-62708-215-0
... rapid tube wall stretching Fig. 4 Cross-section through tube 4. Note the pronounced ovality of the fireside compared to the semicircular cross section. of the coldside. To evaluate the damage to the boiler tubes, dimensional measurements were taken to quantify the distortion, while...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001845
EISBN: 978-1-62708-241-9
..., a tightening torque is applied as a moment (in units of N m) to the head of the bolt. This applied moment is transformed along the interface between the bolt and bore. The preload in a bolt often has a significant effect on deflections and stresses [ 6 , 7 ]. In this work, a three-dimensional finite...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001598
EISBN: 978-1-62708-232-7
... several days to complete. Nondestructive Analyses Dimensional and Metallurgical Evaluation The failure analysis demonstrated that long term elevated temperature exposure degraded the CIM. Voids on the grain boundaries and significant grain growth in the area adjacent to the holes...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... Caused by Overheating Imperfections Created during Forging Dimensional Imperfections Unique to Forging Nonferrous Forging Defects Titanium Aluminum Common Forging Defects Copper and Copper Alloys Acknowledgment References References 1. Vander Voort G...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
... , Vol 8 , ASM Handbook , ASM International , 2000 10.31399/asm.hb.v08.a0003329 9. He B.B. , Two-Dimensional X-Ray Diffraction , 2nd ed. , John Wiley & Sons, Inc ., 2009 10. Lester H.H. and Aborn R.H. , Army Ordnance , Vol 6 , 1925–1926 , p 129 , 200, 283...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... ceramics: knowledge on how they are being used, the variables describing the environment in which they have to perform, and the minimization of the amount of variations or of the cyclic nature of the constraints help in avoiding premature failures. As a final consideration, corrosion resistance...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003533
EISBN: 978-1-62708-180-1
... versus Low Voltage Secondary Electrons Backscattered Electrons Characteristic X-rays All SEMS require a vacuum system to allow an electron beam to be produced and directed onto the target material. The constraints placed on the vacuum system depend on the type of SEM. With the advent of low...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006769
EISBN: 978-1-62708-295-2
... magnifications (approximately 10× to greater than 100,000×). The ability to obtain in-focus images of rough samples over a large change in vertical height is termed depth of field, and it is this trait that gives SEM images their characteristic three-dimensional appearance. The large depth of field is made...