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ultrasonic inspection model

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001639
EISBN: 978-1-62708-229-7
... Abstract This paper describes the remote ultrasonic (UT) examinations of a high-level radioactive waste storage tank at the Savannah River Site in South Carolina. The inspections, carried out by E.R. Holland, R.W. Vande Kamp, and J.B. Elder, were performed from the contaminated, annular space...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006936
EISBN: 978-1-62708-395-9
... Fig. 1 Ultrasonic nondestructive evaluation (NDE) system components Fig. 2 Common methods of ultrasonic inspection: (a) pitch-catch, (b) through-transmission, (c) pulse-echo Fig. 3 Attributes of an array transducer Fig. 4 Phased array element grouping. Example...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001841
EISBN: 978-1-62708-241-9
... of reliability. If small cracks are induced in these devices, it is challenging at best to detect these defects unless the devices are subjected to stresses and thorough inspection prior to the final manufacturing step. As a result, incipient ultrasonic cleaning-induced cracks can remain undetected in finished...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
.... Although single-element transducers have been used for several decades, such inspections are increasingly commonly performed with equipment that uses a phased array. The ultrasonic NDT landscape also has been further advanced by the increased availability of modeling ( Ref 23 ). The article “Ultrasonic...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003515
EISBN: 978-1-62708-180-1
... alarms if they are sufficiently large. The POD, or any other measure of the effectiveness of a technique, will obviously depend on the criteria for acceptance or rejection of a part. For example, in the case of a pulse-echo ultrasonic inspection, a received electrical signal at a time, T , after...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001079
EISBN: 978-1-62708-214-3
... Leading to Failure Testing Procedure and Results Nondestructive Evaluation Magnetic Particle and Ultrasonic Inspection Finite-Element and Fracture Mechanics Analyses Mechanical Properties Surface Examination Scanning Electron Microscopy/Fractography Condition Assessment...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001071
EISBN: 978-1-62708-214-3
... a critical size, the valve fractured. Finite-element models were built to determine the causal relationship between design, materials selection, material defects, fabrication, operation and use, maintenance, and inspection. A minimum wall thickness of 9.5 mm (0.375 in.) was specified by the manufacturer...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001817
EISBN: 978-1-62708-241-9
..., and fractography evaluations. All the test specimens were cleaned in acetone and distilled water, using ultrasonic bath. For microstructural analysis, specimens were mounted, polished, and etched in 2% Nital, and to study fracture morphology, fractured surfaces were inspected under the scanning electron microscope...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001526
EISBN: 978-1-62708-229-7
... was to determine the extent and severity of the cracking, to evaluate the feasibility of repair welding, and to establish the cause and origin of the cracking. The inspection, which included borescope and ultrasonic examinations, revealed the presence of severe circumferential cracking in both the west and east...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... Fig. 2 Dimensions of the bolt according to DIN906 standard Fig. 3 The shape of the bolt and the hole Fig. 12 Results of SEM investigations near the cracked surface Fig. 13 The finite element model with and without the refined meshings around the hole of casting process...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006823
EISBN: 978-1-62708-329-4
... are generally expected to be at a local maximum on the bottom of the drum where liquid gathers. This was found to be the case during a routine inspection at an oil refining facility, when an automated ultrasonic thickness examination revealed significant corrosion at the bottom of a 3.05 mm (0.12 in.) inside...
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
... Abstract This article provides an overview of the structural design process and discusses the life-limiting factors, including material defects, fabrication practices, and stress. It details the role of a failure investigator in performing nondestructive inspection. The article provides...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006809
EISBN: 978-1-62708-329-4
..., should be reliably detected by modern inspection techniques (including surface inspection and ultrasonic inspection techniques). Results Results from the level 3 FFS evaluation were used to establish the envelope of permissible pressure-temperature curves shown in Fig. 10 ; for comparison...
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
... on failure and life assessment of components, structural design philosophies, the role of the failure analyst in life assessment, and the role of nondestructive inspection. They also cover fatigue life assessment, elevated-temperature life assessment, fitness-for-service life assessment, brittle fracture...
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
... MANUFACTURING (AM) refers to a group of free-form fabrication technologies that incrementally build up a solid part by computer-controlled deposition of material from a digital solid model. The technology is an outgrowth and broadening of rapid prototyping methods that were developed in the 1980s to accelerate...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006819
EISBN: 978-1-62708-329-4
... properly designed, fitness-for-service methods can be used to determine the current extent of fatigue damage, to realistically estimate remaining fatigue life, and to establish appropriate inspection intervals. Moreover, inspection (nondestructive examination) is a critical aspect of managing the risk...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006822
EISBN: 978-1-62708-329-4
... physical measurement, ultrasonic inspection, or noncontact measurement such as laser scanning. Visual examination of the large-scale leak or rupture features as well as detailed visual fractographic examination, with magnification if possible. Often this step is repeated after some pipe sections...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006807
EISBN: 978-1-62708-329-4
... temperatures. The article describes the stages of the creep curve, discusses processes involved in the extrapolation of creep data, and summarizes notable creep constitutive models and continuum damage mechanics models. It demonstrates the effects of stress relaxation and redistribution on the remaining life...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003516
EISBN: 978-1-62708-180-1
... components eddy current, ultrasonic, x-ray, dye-penetrant, and visual inspections are regularly accomplished. Fatigue Crack Growth Variables The fundamental variables involved in any life assessment are those that describe the effects and interaction of material behavior, geometry, and stress history...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001753
EISBN: 978-1-62708-241-9
...-ionized water at a temperature of 95 °C. The samples were left in the bath while being ultrasonically agitated for 30 min, with regular visual progress inspections throughout the process. The fracture surfaces (samples A–D), along with the polished metallographic mounts, were analyzed in the scanning...