Tensile Specimen Preparation
Tensile Specimen Preparation - Related Videos
10:09
Tensile Strength of Resorbable Biomaterials
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2023
Source: Peiman Shahbeigi-Roodposhti and Sina Shahbazmohamadi, Biomedical Engineering Department, University of Connecticut, Storrs, Connecticut For over 4000 years, sutures have been used as a medical intervention. The earliest records indicate linen was the biomaterial of choice. Catgut, which is still in use today, was reportedly used to treat gladiators around 150 AD. Today, there are numerous materials being used for sutures. Sutures are classified by their composition (natural or...
07:07
Biomechanical Characterization of Human Soft Tissues Using Indentation and Tensile Testing
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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.
04:05
Safe Viral Specimen Preparation for Transmission Electron Microscopy
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2026
Source: Blancett, C. D., et al. Utilization of Capsules for Negative Staining of Viral Samples within Biocontainment. J. Vis. Exp. (2017).This video demonstrates the safe viral specimen preparation for transmission electron microscopy. The viral particles are fixed with glutaraldehyde, stained with an electron-dense agent, and subjected to vapor fixation with osmium tetroxide to stabilize structures and ensure complete inactivation, ensuring safe handling of viral samples while improving...
07:15
A Novel Method for In Situ Electromechanical Characterization of Nanoscale Specimens
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Cited by 2 •
2017
Isolating electrical and thermal effects on electrically assisted deformation (EAD) is very difficult using macroscopic samples. Metallic sample micro- and nanostructures together with a custom test procedure have been developed to evaluate the impact of applied current on the formation without joule heating and evolution of dislocations on these samples.
08:20
Cell Block Preparation from Cytology Specimen with Predominance of Individually Scattered Cells
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Cited by 67 •
2009
Shidham's method for preparation of cell blocks with AV-marker from cytology specimens containing individually scattered cells and small cell groups.
FAQs
Gauge-section geometry controls where deformation and failure develop during axial loading. A properly shaped reduced section helps concentrate the test response in a defined region, while irregular dimensions or abrupt features can introduce unwanted stress concentrations. Controlling this geometry makes measured strength, ductility, and elastic response more representative of the material rather than of accidental specimen features.
Burrs and machining damage can create local flaws on the specimen surface. These imperfections may influence where cracking or failure begins, causing the test to reflect fabrication effects instead of the material’s behavior. Removing them and maintaining the intended surface condition improves the reliability of measurements used to compare materials or evaluate manufacturing quality.
Material orientation can be important because a specimen’s direction within the source material may affect the response measured under axial loading. Recording orientation preserves the connection between the test piece and the original material. This information helps engineers interpret differences between results and supports more consistent material comparison, quality control, and design validation.
The specimen dimensions associated with its defined geometry should be measured and recorded before loading. These records document the initial condition of the test piece and provide a basis for interpreting the measured response. Dimension checks can also reveal whether cutting, machining, or finishing produced a specimen that matches the intended configuration before the experiment begins.
A typical workflow begins by cutting or machining the material into a test piece, forming the reduced gauge section, removing burrs and machining damage, and checking the resulting dimensions. Material orientation and specimen condition should also be documented when relevant. Completing these steps before axial loading helps separate preparation-related effects from the material response measured during testing.
Prepared specimens support tensile testing when engineers need material-property information for selection, quality control, or design validation. The resulting tests can provide evidence about yield strength, ultimate tensile strength, ductility, and elastic response. Because preparation controls geometry, surface condition, and orientation, it also helps make results suitable for meaningful comparisons among materials or production conditions.