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Elastic modulus determination of random glass fiber-reinforced polyester composites using pulse-echo ultrasonic method
Judawisastra H.a, Sasmita F.a, Naufal M.a, Nurhamidi I.a, Alfian D.a
a Materials Science and Engineering Researh Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 American Institute of Physics Inc.. All rights reserved.Random glass fiber polymer composites are often used as structural components and chemical resistant reinforcement layer. These kinds of composites can be degraded by environmental interactions and workload, resulting in the decrement of elastic modulus which will lead to a structural failure. Elastic modulus represents the elastic properties of composites. Theoretically, elastic modulus value could be obtained by using ultrasonic pulse-echo technique. This experiment is conducted to determine elastic modulus of random glass fiber reinforced polyester composites by measuring the longitudinal velocities. Four different fiber volume fractions with different thicknesses were ultrasonic tested followed by a comparison to the analytical model. Additional delay transducer was used to hinder the nearfield effect. Attenuation factor were measured to consider its effect to the calculated elastic modulus. Results show that the use of pulse-echo ultrasonic method has been able to determine the anisotropy and the effect of fiber volume fraction to elastic modulus of random glass fiber-reinforced polyester composites. The calculated in-plane elastic modulus have errors up to 28% compared to the analytical model and higher fiber volume fraction produced higher sound velocity and greater wave attenuation.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1063/5.0016238[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]