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http://dx.doi.org/10.3795/KSME-A.2002.26.11.2328

Nondestructive Evaluation on Strength Characteristic and Damage Behavior of Al 7075/CFRP Sandwich Composite  

Lee, Jin-Kyung (동의대학교 기계공학과)
Yoon, Han-Ki (동의대학교 기계공학과)
Lee, Joon-Hyun (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.26, no.11, 2002 , pp. 2328-2335 More about this Journal
Abstract
A hybrid composite material has many potential usage due to the high specific strength and the resistance to fatigue, when compared to other composite materials such as fiber reinforced plastic(FRP) and metal matrix composite(MMC). However, the fracture mechanism of hybrid composite material is extremely complicated because of the bonding structure of metals and FRP. In this study, Al 7075 sheets and carbon epoxy preprags were used to fabricate the hybrid composite. Recently, nondestructive technique has been used to evaluate the fracture mechanism of these composite materials. AE technique was used to clarify the microscopic damage behavior and failure mechanism of A17075/CFRP hybrid composite. It was found that AE paralneters such as AE event, energy and amplitude were effective to evaluate the failure process of Al 7075/CFRP composite. In addition, the relationship between the AE signal and the characteristics of fracture surface using optical microscope was discussed.
Keywords
Al/CFRP Hybrid Composite; Nondestructive Technique; Acoustic Emission; AE Parameters; Optical Microscope;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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