Scholarlink

<p>This study introduces the Modified Seesaw Test (MST), an innovative method for determining tensile strength in ring-shaped rock specimens by applying diametral tensile forces from the inner diameter outward. Utilizing finite element analysis in ANSYS Workbench 2021, tensile stress values and shape factors were calculated across various diameter ratios for both MST and Indirect Ring (IR) tests. The analysis demonstrated a decrease in failure load with increasing inner diameter, with tensile strengths from the Brazilian Disc (BD) test surpassing those from the IR and MST methods by 15% and 23%, respectively. Fracture pattern analysis revealed more linear fractures in MST specimens due to perpendicular loading, compared to the multi-line fractures in IR specimens caused by combined stresses. Despite these variations, MST and IR methods proved reliable, offering viable alternatives to the BD test, particularly for low-capacity testing setups. This research underscores the critical role of specimen geometry and loading configuration in tensile strength measurements, providing valuable insights for advancing tensile testing methodologies in rock mechanics.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The unique modified seesaw test (MST) instrument for the direct assessment of rock’s tensile strength utilizing ring-shaped specimens

  • 期刊论文

  • 发表日期：

    2025年6月19日

查看全文
  • PARVEEN KUMAR,
  • SRIJAN SRIJAN,
  • VANITA AGGARWAL,
  • BALJIT SINGH WALIA

摘要

This study introduces the Modified Seesaw Test (MST), an innovative method for determining tensile strength in ring-shaped rock specimens by applying diametral tensile forces from the inner diameter outward. Utilizing finite element analysis in ANSYS Workbench 2021, tensile stress values and shape factors were calculated across various diameter ratios for both MST and Indirect Ring (IR) tests. The analysis demonstrated a decrease in failure load with increasing inner diameter, with tensile strengths from the Brazilian Disc (BD) test surpassing those from the IR and MST methods by 15% and 23%, respectively. Fracture pattern analysis revealed more linear fractures in MST specimens due to perpendicular loading, compared to the multi-line fractures in IR specimens caused by combined stresses. Despite these variations, MST and IR methods proved reliable, offering viable alternatives to the BD test, particularly for low-capacity testing setups. This research underscores the critical role of specimen geometry and loading configuration in tensile strength measurements, providing valuable insights for advancing tensile testing methodologies in rock mechanics.