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Lexan, a commercial form of polycarbonate resin thermoplastic, has some acoustic and vibration damping capabilities, among other properties, which have recommended it for building, vehicle and appliance constructions. However, along the lines of intelligently designed periodic-structure materials, with more recent understanding, these capabilities...
Contexts in source publication
Context 1
... 4 and 6 show the acoustic responses of solid lexan, and those with through holes and with membrane-covered holes. Fig. 5 shows the mode shapes of the solid lexan disk in the flexural modes 1 to 3, while Tables 1 to 4 summarize the vibration frequency characteristics of these samples. ...Context 2
... expected Tables 1 to 4 not only show that experiment and numerical FE simulations show very good agreement, but, as expected, one can rank-order the resonance frequencies of the lexan with large holes, lexan with membrane, lexan with small holes, and solid lexan. This would stem from the usual relationship between frequency and the ratio of effective stiffness to effective mass of the structure. ...