Development of real-time quality evaluation of friction welding by acoustic emission: Report 1

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:264140

Oh, S K; Oh, J H; Jeon, T E ^[1]; Oh, S W ^[2]

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1. National Fisheries Univ. of Pusan (Korea, Republic of)
2. Dong-A Univ., Pusan (Korea, Republic of)

As friction welding has been increasingly applied in manufacturing various machine components because of its significant economic and technical advantages, one of the important concerns is the reliable quality monitoring method for a good weld quality with both joint strength and toughness in the process of its production. However, no reliable nondestructive test method is available at present to determine the weld quality, particularly during production. So this paper presents an experimental examination and quantitative analysis for the real-time evaluation of friction weld quality by acoustic emission, as a new approach which attempts finally to develop an on-line quality monitoring system design for friction welds using AE techniques. As one of the important results, it was confirmed, through this study, that AE techniques can be reliably applied to evaluating the friction weld quality with 100% joint strength, as the cumulative AE counts occurring during the welding period were quantitatively correlated with reliability at 95% confidence level to the joint strength of welds.

• OSTI ID: 264140
• Report Number(s): CONF-950604--; ISBN 1-880653-20-6
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
ACOUSTIC TESTING
FRICTION WELDING
OFFSHORE PLATFORMS
PROCESS CONTROL
ULTIMATE STRENGTH
WELDED JOINTS