Related Experiment Video
Updated: Jun 9, 2026
Fragility Assessment of Bovine Cortical Bone Using Scratch Tests
Published on: November 30, 2017
Normalized specimen thickness requirements of a compact sandwich test for measuring fracture toughness of bone
Satya Prasad Paruchuru1, Anuj Jain
1VNR VJ Institute of Engineering and Technology, Hyderabad and Applied Mechanics Department, M.N.N.I.T., Allahabad - India.
Aim:
Fracture toughness is one of the properties that assesses bone quality. Compact sandwich (CS) test gives a better choice of bone sample size and therefore suits a wide variety of fracture toughness testing needs and constraints. This study addresses one of the important standardization aspects of CS test for fracture toughness testing of bone. The aim of this study is to establish normalized specimen thickness requirements of CS test.
Methods:
This study used finite element (FE) simulation of CS test in order to establish the requirements, and experimental fracture toughness tests to verify the same. Statistical analysis validated the FE and experimental results.
Results:
Validation of FE model was performed using post-hoc analysis of existing experimental data. The experimental CS tests gave statistically valid stress intensity factor and energy release rate of bone.
Conclusions:
Reliable normalized specimen thickness requirements of CS test are established. This serves as a guideline to carry out CS test. CS test helps in meeting the fracture toughness testing requirements at macroscopic and sub-millimetre scales.
More Related Videos
04:20Practical Considerations for the Design, Execution, and Interpretation of Studies Involving Whole-Bone Bending Tests of Rodent Bones
Published on: September 1, 2023
08:04Proximal Cadaveric Femur Preparation for Fracture Strength Testing and Quantitative CT-based Finite Element Analysis
Published on: March 11, 2017
Related Concept Videos
01:27Compact Bone
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
01:20Strength of Cement
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in ASTM C...