Tensile Testing of Soft Biological Tissues
The testing of soft tissues and various biomaterials can provide important insight into the material properties for research purposes. Typical specimens include skin, collagen, muscular tissues, and hydrogels; each of which are often delicate in nature and have low strength values. Properly testing these materials for accurate results presents a unique set of challenges.
The challenges of testing soft biological tissues are:
- Testing in vitro
- Repeatable strain measurement
- Secure gripping of specimens
- Testing in vitro – Testing in vitro ensures that the mechanical properties of natural tissues are maintained and that bio-engineered tissues are tested in their working environment. The BioPuls™ Bath, which has an adjustable temperature controller, allows for the testing of specimens at in vivo conditions. The bath is also compatible with submersible pneumatic grips and compression platens.
- Repeatable strain measurement – Due to the fragile nature of biological soft tissues, a non-contacting extensometer is the ideal solution. The AVE 2 Non-Contacting Video Extensometer can precisely measure elongation under both standard and in vitro conditions.
- Secure gripping of specimens – Pneumatic grips are recommended to grip the specimens without tearing or inducing slippage. They allow for adjustable gripping pressure and a choice of face dimensions and surfaces. Typically, serrated or flat faces with low grit sandpaper are used for best results.
5900 Universal Testing Systems are engineered for precision, built for durability, and offer the flexibility for changing requirements. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. A wide range of models are available for testing capacities from < 100N up to 600kN.
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Instron 3300 Series Universal Testing Systems for Tensile, Compression, Bend, and other material property tests.
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Bluehill Universal Software is built from the ground-up for touch interaction and an intuitive user experience. Discover simpler and smarter testing with features such as pre-loaded test methods, QuickTest in seconds, enhanced data exporting: and Instron Connect – a new feature that provides a direct communication link to Service. Users of previous versions of software such as Bluehill 2 and Bluehill 3 can easily upgrade to the newest version of Bluehill.
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The BioPuls submersible pneumatic side action grips and temperature-controlled bath with pneumatic lifting and lowering mechanism is the ideal testing solution for a wide variety of biomedical testing applications.
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The second generation Advanced Video Extensometer (AVE 2) utilizes patented measurement technology in the fastest, most accurate non-contacting strain measurement device commercially available.
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While contacting extensometers offer accurate strain measurement, they can have an adverse effect on results due to influence or slippage on the specimen by knife edges, damage to the specimen at break, or wear of moving parts. As a result, Instron® introduced the first commercial video extensometer in 1991. The newest Standard Video Extensometer (SVE 2) is a high-performance, non-contacting extensometer that is ideally suited for everyday applications such as rubber, soft plastics, elastomers and other materials with high strain to failure. Additionally, the SVE 2 is available with various Fields of View (FOV) that suit applications in both ambient and non-ambient temperature conditions.
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