نتایج جستجو برای: acoustic emission testing

تعداد نتایج: 591973  

2009
Igor Maria De Rosa Carlo Santulli Fabrizio Sarasini

Acoustic emission and transient IR thermography have been used to study and compare the performance of carbon/epoxy laminates, subjected to two different indentation procedures in a three-point flexural rig, one with a supporting steel plate and the other in a free bending mode. The study of 2-D localisation plots and cumulative counts vs. time curves allowed clarifying, with the essential supp...

2008
H. Moradi A. - C. Donea C. Lindsey D. Besliu - Ionescu P. S. Cally

We report the discovery of one of the most powerful sunquakes detected to date, produced by an X1.2-class solar flare in active region 10720 on 2005 January 15. We used helioseismic holography to image the source of seismic waves emitted into the solar interior from the site of the flare. Acoustic egression power maps at 3 and 6 mHz with a 2 mHz bandpass reveal a compact acoustic source strongl...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 1991

Journal: :The European Physical Journal B - Condensed Matter 2003

Journal: :Journal of the Japan Society of Precision Engineering 1985

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