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sound wave method

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Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003653
EISBN: 978-1-62708-182-5
... Abstract This article focuses on the methods that are being developed for detecting and monitoring corrosion: electrochemical methods, electromagnetic or sound wave methods, fiber-optic technology, fluorescence methods, and the Diffracto Sight method. It reviews the importance of data...
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
... inspection of composite material is accomplished by generating sound waves at ultrasonic frequencies between 500 kHz and 35 MHz and directionally focusing the waves on the material to be inspected. The ultrasonic transducer is typically coupled to the material by water, water-soluble gels, or oil because...
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
... account of ultrasonic flaw detectors, including ultrasonic transducers and types of search units and couplants. The article describes pulse-echo and transmission inspection methods and data interpretation. The general characteristics of ultrasonic waves and the factors influencing ultrasonic inspection...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005616
EISBN: 978-1-62708-174-0
... with the radiography method over other NDE methods is the requirement for accessibility to both surfaces of the material to be tested. Ultrasound The ultrasonic method uses high-frequency sound waves to locate and measure flaws in welds. It can be used to inspect various materials such as metals, plastics...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006477
EISBN: 978-1-62708-190-0
... method over other NDE methods is the requirement for accessibility to both surfaces of the material to be tested. Ultrasound The ultrasonic method uses high-frequency sound waves to locate and measure flaws in welds. It can be used to inspect various materials such as metals, plastics, composites...
Book Chapter

Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006474
EISBN: 978-1-62708-190-0
... the form of radiation restricts the practical range of sound wave frequency that can be used in acoustical holography, as discussed later in this article. The basic systems for acoustical holography are the liquid-surface type and the scanning type. These use two different detection methods...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005935
EISBN: 978-1-62708-166-5
... longitudinal in the form of compression wave motion. This means that particles oscillate in a longitudinal direction and produce periodic compression and extension, which propagate through the media with the sound velocity. Therefore, material density and sound pressure increase in compression. The pressure...
Series: ASM Handbook
Volume: 4F
Publisher: ASM International
Published: 01 February 2024
DOI: 10.31399/asm.hb.v4F.a0006999
EISBN: 978-1-62708-450-5
... evaluated with the same program, SpectraLAB, and the temperature signals were processed. In acoustic theory, sound motion in liquids and gases is always longitudinal in the form of compression wave motion. This means that particles oscillate in a longitudinal direction and produce periodic compression...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.9781627081900
EISBN: 978-1-62708-190-0
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006469
EISBN: 978-1-62708-190-0
... Abstract This article considers the two primary methods used for ultrasonic inspection: pulse-echo and the transmission methods. Pulse-echo inspection can be accomplished with longitudinal, shear, surface (Rayleigh), or Lamb (plate) waves using a diverse range of transducers. The article...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003240
EISBN: 978-1-62708-199-3
..., such as sound waves. The two methods currently available for practical nondestructive inspection are optical holography, using visible light waves, and acoustical holography, using ultrasonic waves. Optical Holography Optical holographic interferometry has been successfully used both in research...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
..., matrix macrocracks, and voids in composite structures. The ultrasonic method itself uses longitudinal, shear, Lamb, Rayleigh, or guided waves for various measurements on composite materials. Wave parameters, including acoustic attenuation and speed, can be used to determine materials properties...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001344
EISBN: 978-1-62708-173-3
... (a) Less than melting point of base metal. (b) Less than or equal to melting point of base metal Brazing Many products are assembled from two or more individual components that are often permanently joined to produce structurally sound assemblies. Joining methods include various fasteners...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006336
EISBN: 978-1-62708-179-5
... but has poor penetration, due to the generation of subsurface eddy currents. Half-wave rectified dc provides the penetration of dc but with the particle mobility of ac. Method of field generation: Magnetic fields are always generated by current flowing through a conductor. The conductor can...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003658
EISBN: 978-1-62708-182-5
...) tools: microwave NDE and guided wave (GW) ultrasonic NDE methods. The in-service inspection scenario is complicated by the fact that corrosion is often hidden, and expensive disassembly can be required to complete an inspection. Microwave and GW NDE techniques have promise as methods that minimize...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003296
EISBN: 978-1-62708-176-4
... and stiffness. Mounting brackets are generally designed s o that they can be individually translated to adjust bar alignment within each stanchion. Fig. 2 A compression split-Hopkinson pressure bar facility at Los Alamos National Laboratory The most common method of generating an incident wave...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003436
EISBN: 978-1-62708-195-5
... Abstract This article introduces the principal methodologies and some technologies that are being applied for nondestructive evaluation of composite materials. These include ultrasonic testing (UT), air-coupled UT, laser UT, ultrasonic spectroscopy, leaky lamb wave method, acousto-ultrasonics...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006441
EISBN: 978-1-62708-190-0
... Abstract Guided wave testing (GWT) is a method of nondestructive evaluation for the inspection of pipelines. This article focuses mainly on explaining GWT as it is applied in routine established use, covered by standards, in the oil and gas industry and also introduces some of the other...
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
... in this article. As the technique continues to develop, the precise limits of applicability will become more clearly defined. Testing Principles The principles of ultrasonic fatigue testing are quite simple. Ultrasonic fatigue is a resonant test method, in which a large-amplitude displacement wave must...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009152
EISBN: 978-1-62708-186-3
... Ultrasonic Sensors Ultrasonic inspection is a method in which high-frequency sound waves are introduced into workpiece materials to detect surface or subsurface flaws. The sensor typically consists of an ultrasonic transducer that serves as both a pulsar (emitter) and a receiver. This ultrasonic...