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http://dx.doi.org/10.9726/kspse.2012.16.1.072

Characteristics of Cracks under Vickers Indentation in Glass Using Acoustic Emission  

Park, H.Y. (부경대학교 대학원)
Lee, J.K. (부경대학교 물리학과)
Park, H.I. (부경대학교 신소재공학부)
Lee, B.W. (부경대학교 신소재공학부)
Publication Information
Journal of Power System Engineering / v.16, no.1, 2012 , pp. 72-77 More about this Journal
Abstract
Acoustic emission (AE) is known to be sensitive to fracture process and so it was expected that AE data may propose as a means of monitoring the fracture information. The aim of this study is to analyze the characteristic of AE signal emitted from glass during Vickers indentation. To observe AE characteristics by surface effect, both glass and coating glass were studied. During Vickers indentation loading, AE signal resulted from penny-like crack is detected. During Vickers indentation unloading, AE signal resulted from both radial/median crack and lateral crack is detected. In case of indentation on glass, the emission energy(${\epsilon}$) is found to be approximately proportional to the fourth power of the crack length. In case of indentation on coating glass, the emission energy(${\epsilon}$) is approximately proportional to the crack length.
Keywords
Glass; Vickers Indentation; Acoustic Emission; Radial/Median Crack; AE Energy;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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