Experimental correlation of mechanical properties of joints and transverse vibrations in PMMA beams

• Published in: Journal of applied polymer science Vol. 60; no. 3; pp. 343 - 352
• Main Authors: Kamle, S., Upreti, S. R., Awasthi, V. K., Singh, M. P., Iyengar, N. G. R., Kumar, A.
• Format: Journal Article
• Language: English
• Published: New York Wiley Subscription Services, Inc., A Wiley Company 18.04.1996; Wiley
• Subjects: Applied sciences; Exact sciences and technology; Forms of application and semi-finished materials; Miscellaneous; Polymer industry, paints, wood; Technology of polymers; Transversal vibration; Bending wave; Methyl methacrylate polymer; Experimental study; Beam(mechanics); Mechanical test; Plasticizer; Adhesive joint; Diester; Concentration effect; Measurement method; Non destructive test; Impact test; Strength
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/(SICI)1097-4628(19960418)60:3<343::AID-APP7>3.0.CO;2-L

An ultrathin joint in a poly(methyl methacrylate) (PMMA) beam was introduced by joining the two pieces using 1,2‐dichloroethane. The viscoelastic property of the interfacial region was varied using dioctylphthalate (DOP) plasticizer and flexural waves in the beam were generated by impacting the beam with a small steel ball as well as with a calibrated experimental impact hammer. The acceleration vs. time data of a given point on a beam were used to optimally separate the wave emanating from the joint and were shown to correlate with the mechanical strength of the joint. © 1996 John Wiley & Sons, Inc.