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Experimental Studies on Thermo-Mechanical Behavior of Ultrasonically Welded PC/ABS Polymer Blends

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Abstract

This research paper attempts to investigate the performance of blended PC/ABS joints using the ultrasonic material joining process. The key focus is on examining the thermal aspects during the joining of PC/ABS blends using ultrasonic welding and the subsequent mechanical testing to determine the strength of the weldments. Thermal behavior of the blends during welding may govern or alter the mechanical properties and integrity of the joints. Hence, investigations on thermal characteristics involved in PC/ABS blends when subjected to high vibrational heat generated during the ultrasonic welding process is imperative. DSC is used to measure the glass transient temperature (Tg) after subjecting it to welding. Mass loss is calculated with TGA. TGA and DSC results indicate change in Tg which are attributed to the molecular alignment occurring when the specimens are subjected to ultrasonic vibrations. Initially, two step mass losses occur that is contributed by ABS in which long single chains are associated and alters PC. SEM images reveal the absence in intermolecular compounds or impurities that tend to weaken weld joints. The diffusion of these molecules is uniform in the welded region. The amorphous nature enhances the integrity of weld joints. Molded part illustrates the higher strain rate in comparison with the welded specimens. The RSM model proposed is sufficient and has limited possibility for violating the independence or the assumption of constant variance.

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Authors and Affiliations

  1. Industrial Automation and Instrumentation Division, SELECT, VIT University, Vellore, India

    T. Chinnadurai & S. Arungalai Vendan

  2. School of Mechanical Engineering, VIT University, Vellore, India

    M. Natesh & R. Dinek

  3. Department of Energy, Periyar University, Salem, India

    K. A. Ramesh Kumar

Authors
  1. T. Chinnadurai
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  2. M. Natesh
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  3. S. Arungalai Vendan
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  4. R. Dinek
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  5. K. A. Ramesh Kumar
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Correspondence to S. Arungalai Vendan.

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Chinnadurai, T., Natesh, M., Vendan, S.A. et al. Experimental Studies on Thermo-Mechanical Behavior of Ultrasonically Welded PC/ABS Polymer Blends. Silicon 10, 1937–1948 (2018). https://doi.org/10.1007/s12633-017-9706-y

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  • DOI: https://doi.org/10.1007/s12633-017-9706-y

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