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proof load testing

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Published: 01 January 2000
Fig. 15 Proof-load testing of nuts. Source: Ref 1 More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003323
EISBN: 978-1-62708-176-4
... fasteners include product hardness, proof load, axial and wedge tension testing of full-sized products, tension testing of machined test specimens, and total extension at fracture testing. Product hardness, proof load, and cone proof-load test are the test methods for internally threaded fasteners...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
... in detailed design procedure. The article provides information on the proof testing of ceramics, and presents a short note on public domain software that helps determine the reliability of a loaded ceramic component. The article concludes with several design scenarios for gas turbine components, turbine...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002381
EISBN: 978-1-62708-193-1
.... Fig. 5 Destructive inspection with proof test. (a) Crack growth. (b) Detection of cracks equal to or greater than proof size. (c) Lower proof load with cooling As an example, consider a component that is subjected to a proof stress, σ proof . Fracture will occur if a crack a proof...
Image
Published: 01 January 1996
Fig. 5 Destructive inspection with proof test. (a) Crack growth. (b) Detection of cracks equal to or greater than proof size. (c) Lower proof load with cooling More
Book Chapter

By Eugene Shapiro
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003268
EISBN: 978-1-62708-176-4
... is obtained by the measurements of load and deflection at stresses below the proportional limit. The bending proof strength is determined by increasing the load in steps and unloading until a specified permanent set is obtained. The four-point bend test consists of a simple beam resting on two supports...
Image
Published: 31 October 2011
Fig. 19 Typical torque testing arrangement. Studs that must undergo application qualification or preproduction testing should be torqued to destruction without failure in the weld. Proof torque testing during inspection of threaded studs should be applied at 60 to 66% of the yield torque load More
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001018
EISBN: 978-1-62708-161-0
... protective metal coatings for ferrous metal fasteners; zinc, cadmium, and aluminum; are described as well. bolt steels clamping force corrosion protection fastener performance failure modes grade designations proof stress stud steels threaded fasteners wedge tensile test THREADED...
Image
Published: 01 January 1993
Fig. 19 Typical torque testing arrangement. Studs that must undergo application qualification or preproduction testing should be torqued to destruction without failure in the weld. Proof torque testing during inspection of threaded studs should be applied at 60 to 66% of the yield torque load More
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001478
EISBN: 978-1-62708-173-3
... subjects the completed joint to loads that exceed those loads that will be applied during its service life. The proof testing loads can be applied by hydrostatic methods, tensile loading, spin testing, or other methods. Occasionally, it is not possible to ensure a serviceable part by any other...
Image
Published: 01 January 2000
Fig. 31 Three types of loading. (a) Static tension. (b) Cyclic tension-tension fatigue. (c) Proof test followed by fatigue More
Image
Published: 30 January 2024
Fig. 14 Optical image of a fatigue fracture surface from an AA2024-T8 aluminum alloy wing plate. The crack grew from a poorly drilled fastener hole. Fracture-surface markings due to the proof test loads are indicated by arrows. Source: Ref 30 More
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
.... This scatter can cause the results of a fatigue test program to be confusing if the test matrix is not well designed and the results are not evaluated in an appropriate statistical manner. Fatigue testing usually is performed to estimate the relationship between the amplitude of stress or strain (or load...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 30 January 2024
DOI: 10.31399/asm.hb.v12.a0006877
EISBN: 978-1-62708-387-4
... by the underloads-overload combination; see the spectrum schematic. Example 7: Overload Required in Spectrum Loading: AA2024-T8 This example concerns the proof tests that were required for continued operation during the service life of the General Dynamics F-111 aircraft. The in-service load history...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003256
EISBN: 978-1-62708-176-4
... basic test methods for a group or strand of fibers are the single-filament tension and tow tensile tests. Room temperature strength tests, high-temperature strength tests, and proof tests are used for testing the properties of ceramics. mechanical properties ceramics polymers fibers...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
... Abstract This article describes testing and characterization methods of ceramics for chemical analysis, phase analysis, microstructural analysis, macroscopic property characterization, strength and proof testing, thermophysical property testing, and nondestructive evaluation techniques...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002394
EISBN: 978-1-62708-193-1
... between the crack-tip stress and the applied stress of the material being tested. This was accomplished in the paper written by Irwin in 1957 ( Ref 5 ). The results obtained for mode I loading (tension) by Irwin are: (Eq 3) σ x = K I ( 2 π r ) 1 / 2 cos θ 2...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006346
EISBN: 978-1-62708-179-5
... by conduction of heat to water-cooled grips ( Fig. 20b ). The thermal stress that develops in the test specimen is monitored by a load cell installed in one of the grips holding the specimen. During thermal cycling, compressive stresses develop upon heating, and tensile stresses develop upon cooling. As thermal...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006933
EISBN: 978-1-62708-395-9
... the inherent load of the testing conditions. A thermogram showing the glass transition in an amorphous resin is shown in Fig. 11 . The evaluation of the glass transition is presented in Example 14 in Ref 4 . Thermomechanical analysis is generally accepted as a more accurate method for assessing the T g...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003525
EISBN: 978-1-62708-180-1
... observed differences are the result of material deficiencies or variations in test specimen configuration. Instead, mechanical testing is most useful in comparing a known good or control sample with a failed part. Many times, this is best accomplished through some sort of proof load testing. Proof load...