Sem Tensile Test
Sem Tensile Test - Related Videos
09:02
SEM Imaging of Biological Samples
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2023
Source: Peiman Shahbeigi-Roodposhti and Sina Shahbazmohamadi, Biomedical Engineering Department, University of Connecticut, Storrs, Connecticut A scanning electron microscope (SEM) is an instrument that uses an electron beam to nondestructively image and characterize conductive materials in a vacuum. As an analogy, an electron beam is to the SEM as light is to the optical microscope. The difference is that the electron microscope yields images of much higher resolution and magnification. The...
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...
11:41
Scanning Electron Microscopy (SEM)
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2023
Source: Laboratory of Dr. Andrew J. Steckl — University of Cincinnati A scanning electron microscope, or SEM, is a powerful microscope that uses electrons to form an image. It allows for imaging of conductive samples at magnifications that cannot be achieved using traditional microscopes. Modern light microscopes can achieve a magnification of ~1,000X, while typical SEM can reach magnifications of more than 30,000X. Because the SEM doesn’t use light to create images, the resulting pictures it...
11:59
In Situ Characterization of Boehmite Particles in Water Using Liquid SEM
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Cited by 5 •
2017
We present a procedure for real-time imaging and elemental composition analysis of boehmite particles in deionized water by in situ liquid Scanning Electron Microscopy.
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.
FAQs
The key analytical step is correlating the specimen’s stress-strain response with SEM images recorded during loading. Mechanical data shows how the material responds overall, while successive images reveal when surface deformation, plastic strain, crack initiation, and fracture appear. This combination helps researchers associate changes in the measured response with specific microscale failure mechanisms.
Controlled displacement or force provides a defined loading condition while the specimen remains inside the microscope. Maintaining that control allows surface changes to be observed at different stages of tensile loading rather than only after failure. The resulting image sequence can be compared with the mechanical response to track how deformation develops under the applied tensile condition.
SEM imaging can document the progression from elastic deformation to plastic strain, followed by crack initiation and fracture. Observing these events as they develop provides more detailed evidence than examining only the final broken specimen. For engineering analysis, the sequence helps identify where failure begins and connects the visible surface evolution with the material’s measured mechanical behavior.
A specimen is mounted in a miniature tensile stage positioned inside the scanning electron microscope. The stage then applies tensile loading through controlled displacement or force while the microscope records the specimen surface. Researchers use the resulting images together with the mechanical measurements to follow deformation and damage throughout the test, including the transition toward fracture.
The method adds direct visual evidence of surface behavior to the mechanical measurements. Instead of reporting only how the specimen responds to loading, it shows the development of elastic deformation, plastic strain, crack initiation, and fracture. This combined record supports interpretation of failure mechanisms and helps connect measured material performance with the physical events occurring at the microscale.
Applications include the study of metals, polymers, composites, thin films, and other advanced materials. Engineering researchers can apply the approach to material design, failure analysis, and efforts to improve structural reliability. Its value is especially clear when understanding surface-scale deformation and fracture is necessary to explain mechanical behavior or evaluate how a material may fail.