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Study of stress on fracture toughness test mode i using photoelastic method
Qaidahiyani N.F.a, Utama I.A.a, Widodo N.P.a, Arif I.a
a Institute Technology of Bandung, Bandung, 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]© 2017 by Korean Society for Rock Mechanics.Stress of rocks generally can be known, but at the point of fracture initiation is often not known with certainty. To study the stress around fracture initiation, it is difficult to do using mathematical calculations so that the necessary methods of alternative solution is photoelastic method. Major principal stress can be obtained from photoelastic method. In this research, photoelastic method is conducted to study the stress on fracture toughness tests mode I (tension). Sample testing conducted at the Laboratory of Geomechanics and Mine Equipment Institute of Technology Bandung involved the physical properties and mechanical properties test to obtain the sample characteristics as input data for numerical modeling using Rocscience 3 version 1.0, such as the natural density, uniaxial compressive strength, Young’s modulus, Poisson’s ratio, and tensile strength. Moreover, fracture toughness tests mode I are conducted on Modified Ring Test (MRT) and Central Straight-Through Crack (CSCBD) using photoelastic method. The stress can be calculated using colors observed in photoelastic method by following the equation of optical stress. Major principal stress obtained from photoelastic method would be compared to numerical method. From this research, it could be concluded that the results of the stress distribution obtained from numerical modeling have similar results to the stress distribution obtained from photoelastic method, although there are slightly different results, but it still tolerable.[/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]Fracture toughness tests,Major principal stress,Mathematical calculations,Mechanical properties test,Photoelastic,Ring test,Through cracks,Uniaxial compressive strength[/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]Central straight-through crack,Fracture toughness mode I,Modified ring test,Photoelastic,Stress[/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][/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]