MODAL ANALYSIS OF PRE AND POST IMPACTED NANO COMPOSITE LAMINATES

Authors

  • RAMACHANDRAN VELMURUGAN PROFESSOR, DEPARTMENT OF AEROSPACE ENGINEERING, INDIAN INSTITUTE OF TECHNOLOGY MADRAS, CHENNAI-600036, INDIA

Keywords:

LAMINATES, NANO COMPOSITE, IMPACT, NATURAL FREQUENCY, DAMPING FACTOR

Abstract

ABSTRACT:

MODAL ANALYSIS IS CARRIED OUT ON PRE AND POST IMPACTED NANO COMPOSITE LAMINATES. THE LAMINATES ARE PREPARED USING 3, 5 AND 8 LAYERS OF 610GSM GLASS WOVEN ROVING MATS(WRM) WITH EPOXY RESIN AND MONTMORILLONITE(MMT) CLAY CONTENT IS VARIED FROM 1% TO 5%. IMPULSE HAMMER TECHNIQUE IS USED TO FIND NATURAL FREQUENCY AND DAMPING FACTOR OF LAMINATES. MEDIUM VELOCITY IMPACT TESTS ARE CONDUCTED BY USING A GAS GUN. THE VIBRATION RESPONSES OF NATURAL FREQUENCY AND DAMPING FACTOR ARE OBTAINED AND ARE STUDIED FOR  ALL EDGES CLAMPED BOUNDARY CONDITIONS. RESULTS SHOW CONSIDERABLE IMPROVEMENT IN NATURAL FREQUENCY AND DAMPING FACTOR DUE TO NANO CLAY ADDITION. IT IS ALSO SEEN THAT THE NANO CLAY CONTROLS THE DELAMINATION DURING IMPACT.

Author Biography

RAMACHANDRAN VELMURUGAN, PROFESSOR, DEPARTMENT OF AEROSPACE ENGINEERING, INDIAN INSTITUTE OF TECHNOLOGY MADRAS, CHENNAI-600036, INDIA

PROFESSOR, DEPARTMENT OF AEROSPACE ENGINEERING, INDIAN INSTITUTE OF TECHNOLOGY MADRAS, CHENNAI-600036, INDIA

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Published

2011-03-22

Issue

Vol. 8 No. 1 (2011)

Section

Articles

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