Indentation Testing
Indentation Testing - Related Videos
07:07
Biomechanical Characterization of Human Soft Tissues Using Indentation and Tensile Testing
0 Views •
Cited by 111 •
2016
Tissue biomechanics is important for maintaining cell shape and function and for determining phenotype. This report demonstrates non-destructive mechanical protocols for characterizing elastic and viscoelastic properties of human soft tissues, which can be directly applied to tissue-engineered substrates to allow a close matching of engineered materials to native tissue.
08:21
Quantitative Hardness Measurement by Instrumented AFM-indentation
0 Views •
Cited by 6 •
2016
This experimental protocol describes how atomic force microscopy can be used to measure hardness at the true nanometer scale and to detect single atomistic plasticity events.
11:19
Characterizing Multiscale Mechanical Properties of Brain Tissue Using Atomic Force Microscopy, Impact Indentation, and Rheometry
0 Views •
Cited by 36 •
2016
We present a set of techniques to characterize the viscoelastic mechanical properties of brain at the micro-, meso-, and macro-scales.
02:44
Impact Indentation for Assessing the Mechanical Properties of a Mouse Brain Tissue
0 Views •
2025
Source: Canovic, E. P., et. al., Characterizing Multiscale Mechanical Properties of Brain Tissue Using Atomic Force Microscopy, Impact Indentation, and Rheometry. J. Vis. Exp. (2016)The video demonstrates using impact indentation to measure the mechanical properties of a hydrated mouse brain tissue, including stiffness, energy dissipation, and damping, through probe displacement and velocity analysis.
07:47
Anxiety Testing
0 Views •
2023
Anxiety is a commonly observed behavioral disorder that stems from fear. It is described as increased restlessness, or unpleasant feelings of fear over anticipated events. Experimenters often use rodent models to better understand anxiety disorders in humans. They use different paradigms, like exposing rodents to bright spaces or loud sounds, which are known to induce fear. These tests combined with other interventions such as surgery or drug-administration may assist researchers in pinpointing...
FAQs
The recorded relationship between applied load and indenter depth provides the basis for estimating mechanical properties. Changes in how much the sample penetrates under a given load reveal resistance to deformation, while the response can also inform stiffness and hardness. Examining the complete load-depth behavior helps distinguish elastic resistance from broader deformation behavior in the tested region.
Indentation Testing can prescribe either the force applied to the sample or the indenter’s displacement. This choice determines which quantity the instrument controls while it records the other response. Maintaining controlled loading or penetration makes measurements more consistent and allows the resulting load-depth data to be analyzed for the sample’s mechanical behavior.
Because the indenter probes a localized region, Indentation Testing can characterize mechanical behavior at small length scales rather than treating a sample only as a single bulk material. This is useful when researchers want to examine how local structure or composition affects stiffness, hardness, or deformation and how those properties relate to biological or engineered function.
Differences in a sample’s composition or structure can change how it resists the indenter and therefore alter the measured load-depth response. Comparing these responses helps researchers evaluate how material design influences mechanical function. In bioengineering, that comparison can guide assessment of biomaterials and engineered constructs whose performance depends on their physical organization or composition.
A typical workflow places a biological sample or material beneath a probe or indenter, applies a controlled force or displacement, and records the resulting load and depth. Researchers then analyze the load-depth response to estimate properties such as stiffness, hardness, and deformation behavior. The sequence supports consistent comparisons among tissues, hydrogels, constructs, or other samples.
The essential setup includes a sample, a probe or indenter, and an instrument that controls force or displacement while measuring load and depth. In bioengineering, suitable specimens include soft tissues, hydrogels, engineered constructs, and other biomaterials. The small-scale format allows mechanical characterization when the available sample region or feature is limited.
Researchers apply Indentation Testing when they need mechanical information to support material selection, device design, tissue modeling, or evaluation of engineered materials. Measurements can connect a sample’s stiffness, hardness, and deformation behavior with its intended function. The approach is especially relevant for soft tissues, hydrogels, constructs, and biomaterials examined at small length scales.
Indentation measurements provide estimates of stiffness, hardness, and deformation behavior from the sample’s load-depth response. These outcomes help researchers compare tissues or biomaterials, assess engineered constructs, and examine whether changes in structure or composition produce corresponding changes in mechanical function. Such information supports both characterization and decisions about how materials may be used in bioengineering.