Journal ArticleDOI
The application of acoustic emission measurements to fracture mechanics
I.G Palmer,P.T Heald +1 more
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TLDR
In this article, the acoustic emission from a carbon-manganese steel is characterized in terms of the crack tip plasticity and it is found that the total emission count is directly proportional to the plastic zone size and that the source of emissions is the immediate vicinity of the elastic-plastic boundary.About:
This article is published in Materials Science and Engineering.The article was published on 1973-04-01. It has received 54 citations till now. The article focuses on the topics: Acoustic emission & Fracture mechanics.read more
Citations
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Journal ArticleDOI
Damage classification in reinforced concrete beam by acoustic emission signal analysis
Shahiron Shahidan,Shahiron Shahidan,Rhys Pulin,Norazura Muhamad Bunnori,Karen Margaret Holford +4 more
TL;DR: In this article, the acoustic emission parameters of amplitude, rise time, average frequency and signal strength were used to classify the damage and to determine the damage level in a beam with an increasing loading cycle.
Post Yield Fracture Mechanics
TL;DR: In this paper, a simple crack model, which includes a representation of plastic relaxation, is used to discuss the fracture of high and low strength materials in the post-yield regime.
Journal ArticleDOI
Acoustic emission — 3: The use of ring-down counting
TL;DR: In this article, the ring-down counting of acoustic emission signals is discussed and the advantages and limitations of the ringdown counting are discussed. And the authors consider the experimental factors which influence the ring down count and describe methods for their investigation.
Journal ArticleDOI
Acoustic emission for physical examination of metals
TL;DR: In this article, it is shown that metallurgical variables greatly affect the acoustic emission response of metals, and simple models to account for this are discussed, however, the limitations of existing acoustic-emission recording instrumentation have enabled only qualitative information to be obtained to date.
Journal ArticleDOI
Acoustic emission measurements on reactor pressure vessel steel
TL;DR: In this paper, the effects of annealing on the recovery of the emission behaviour of pressure vessel steel are described, together with the effect of oxidation and corrosion, and it is shown that most of the emissions arise from plastic zone expansion, and that ductile crack growth is relatively quiet.
References
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Journal ArticleDOI
Yielding of steel sheets containing slits
TL;DR: In this article, a relation between extent of plastic yielding and external load applied was investigated, and panels containing internal and edge slits were loaded in tension and lengths of plastic zones were measured.
Journal ArticleDOI
Fracture analysis by use of acoustic emission.
TL;DR: In this paper, the authors present results of acoustic emission studies on flawed and unflawed specimens of aluminum and beryllium and show that acoustic emission from the flawed specimens is found to begin at stress levels far below the general yield stress.
Post Yield Fracture Mechanics
TL;DR: In this paper, a simple crack model, which includes a representation of plastic relaxation, is used to discuss the fracture of high and low strength materials in the post-yield regime.
Journal ArticleDOI
Post yield fracture mechanics
TL;DR: In this article, a simple crack model is used to discuss the fracture of high and low strength materials in the post yield regime, and a correspondence is set up between the fracture criteria given by the present model and the familiar results of linear elastic fracture mechanics.
Journal ArticleDOI
Acoustic emission: a new nondestructive testing tool.
H. Dunegan,D. Harris +1 more
TL;DR: In this paper, a new approach to nondestructive testing is proposed which is centred around the concept of utilizing the transducer action of a flaw in a stress field.