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

✍ Scribed by S. Kamle; S. R. Upreti; V. K. Awasthi; M. P. Singh; N. G. R. Iyengar; A. Kumar

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 701 KB
• Volume: 60
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19960418)60:3<343::aid-app7>3.0.co;2-l

✦ Synopsis

An ultrathin joint in a poly(methy1 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.