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ultrasonic fatigue test

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Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003315
EISBN: 978-1-62708-176-4
... Abstract This article discusses the underlying concepts and basic techniques for performing ultrasonic fatigue tests and describes test equipment design, specimen design, and effective control over test variables. It reviews the results obtained with ultrasonic fatigue test methods with respect...
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Published: 01 January 2000
Fig. 5 Schematic of an ultrasonic fatigue test system More
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Published: 01 August 2018
Fig. 29 Change of acousto-ultrasonic stress wave parameter during fatigue test of a graphite/epoxy specimen More
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Published: 01 January 2001
Fig. 29 Change of acousto-ultrasonic stress wave parameter during fatigue test of a graphite/epoxy specimen More
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Published: 01 January 2001
Fig. 10 Change in acousto-ultrasonic stress wave parameter during fatigue test of graphite-epoxy specimen More
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Published: 01 January 2000
Fig. 7 Schematic of an ultrasonic (920 kHz) fatigue testing machine with mean load capability. 1, converter; 2, booster horn; 3, connecting horn; 4, specimen; 5, capacitance gage; 6, cooling ring; 7, four air inlets; 8, venturi air cooler; 9, air supply; 10, upper and lower support plates; 11 More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003317
EISBN: 978-1-62708-176-4
... the data. fatigue crack growth subcritical cracks fatigue loading fatigue crack growth testing middle-crack tension specimen compact-type specimen optical method ultrasonic method acoustic emission method electrical method compliance method crack growth rate fracture mechanics crack...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002363
EISBN: 978-1-62708-193-1
... scanning tunneling microscopy test specimen ultrasonic method X-ray diffraction technique MEASUREMENT OR DETECTION of fatigue cracks and damage can, in general terms, be classified into the following two application areas: laboratory methods and field service assessment methods. Specific techniques...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005628
EISBN: 978-1-62708-174-0
... mechanical test imperfection manual testing metallographic examination nondestructive evaluation process signal quality control quasi-static mechanical test resistance welds resistance-welded joints spot welds ultrasonic evaluation weld quality weld-quality monitoring EVALUATING THE QUALITY...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003437
EISBN: 978-1-62708-195-5
... particles in the composite. Dull or worn tools result in torn surfaces or surfaces with highly disturbed metal. These surfaces result in widely variable mechanical properties. The same comments are appropriate for fatigue samples. A good example of consistent fatigue test results is the R = −1 tests...
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Published: 01 January 1987
Fig. 1037 Composite of three low-magnification SEM fractographs of the surface of the fatigue fracture at A in Fig. 1035 after ultrasonic cleaning. A small portion of the attachment hole is visible along the top of this view. The lack of beach marks here is perhaps due to the brevity More
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006461
EISBN: 978-1-62708-190-0
... adaptability 13 – 15 Air-coupled ultrasonics and immersion ultrasonics … Low-frequency operation allows for inspection of highly attenuative materials. Noncontact scanning capability (air-coupled ultrasonic testing) Transducers are expensive; poor signal-to-noise ratio in certain applications 16...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003236
EISBN: 978-1-62708-199-3
... are also addressed. The article concludes with a review of the advantages and disadvantages of ultrasonic inspection compared with other methods applications of the technique. couplants flaw detection nondestructive testing piezoelectric transducer elements pulse-echo method transmission method...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005607
EISBN: 978-1-62708-174-0
... energy levels ( Fig. 9 , Fig. 10 , 11 ). Tensile testing of the test coupons typically resulted in a button pullout, with the parent metal breaking before the weld failed ( Fig. 12 , 13 ). Failure loads are given in Fig. 14 and Table 1 . A comparison of fatigue life attained by ultrasonic welding...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006462
EISBN: 978-1-62708-190-0
... is determined primarily by results of full-scale fatigue tests. The number of simulated flight hours of operational service completed in the laboratory is the “test life” of the structure. The safe life also depends on the expected distribution of failures. This distribution provides a basis for scaling...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006446
EISBN: 978-1-62708-190-0
... wave similar to those used in linear ultrasonic NDE, but the modulating deformation is sufficiently strong to produce a nonlinear response from the material being tested. The three most popular modulation techniques used in ultrasonic NDE are quasi-static modulation, low-frequency modulation, and high...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003463
EISBN: 978-1-62708-195-5
... out. Fig. 10 Change in acousto-ultrasonic stress wave parameter during fatigue test of graphite-epoxy specimen Radiography Radiography is an NDT technique that can provide extensive and detailed information on the state of damage. A variety of penetrating particles and rays, including...
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
... and conformance to specifications. Brazing procedures should be qualified to meet specification requirements using both nondestructive and destructive inspection methods. Nondestructive Inspection Nondestructive inspection ( Ref 6 ) or testing techniques include visual, leak, radiographic, ultrasonic...
Series: ASM Handbook Archive
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001832
EISBN: 978-1-62708-181-8
... after cleaning in a heated Alconox solution for 30 min. The fatigue precrack region is the smoother fracture segment located to the right of the rougher single-overload region. Figures 4(a) and 4(b) show identical views of an area in the fatigue precrack region before and after ultrasonic cleaning...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003228
EISBN: 978-1-62708-199-3
... Abstract This article reviews nondestructive testing (NDT) and inspection techniques, namely liquid penetrant, magnetic particle, ultrasonics, X-ray, eddy current, visual and radiography that are commonly used to detect and evaluate flaws or leaks in an engineering system. This article compares...