Axial Compression Test
Axial Compression Test - Related Videos
08:08
Compression Tests on Hardened Concrete
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA There are two distinct stages in a construction project involving concrete. The first stage involves batching, transporting, and casting fresh concrete. At this stage, the material is viscous, and the workability and finishability are the key performance criteria. The second stage occurs when the hydration process begins shortly after the concrete is placed in the form, and the concrete will...
05:20
Assessing Spinal Cord Compression Using Diffusion Tensor Imaging
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2025
Source: Zheng, W. et. al., Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression. J. Vis. Exp. (2019)This video demonstrates diffusion tensor imaging in assessing chronic spinal cord compression. By analyzing water diffusion patterns, fractional anisotropy, and apparent diffusion coefficient values, the findings reveal axonal damage in compressed regions. The findings provide critical insights into spinal cord pathology and structural integrity.
02:58
Measurement of Compressive Stress-Strain Response at Small-Strains
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2025
This protocol presents the configuration of a compression test device capable of precisely measuring the mechanical properties of microstructures in the small-strain region, along with a systematic method for compression testing using this device. The proposed device can be used to analyze various microstructures and the mechanical behavior of polymer-based materials.
10:41
Method to Measure Tone of Axial and Proximal Muscle
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Cited by 5 •
2011
We have developed a device (Twister) to study the regulation of tonic muscle activity during active postural maintenance. Twister measures torsional resistance and muscular responses in standing subjects during twisting of the body axis. The device can be flexibly configured to study various aspects of tonic control across the neck, trunk, and/or hips.
01:12
General Case of Eccentric Axial Loading
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2024
Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from symmetrical bending, which are essential for designing structures to withstand different loading conditions. Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical bending,...
FAQs
The stress-strain response connects the applied compressive load with specimen deformation, allowing engineers to examine both strength and stiffness rather than relying on a single failure value. Its shape also shows how deformation develops as loading progresses. This record supports material comparisons and helps determine whether a component’s behavior suits its intended load-bearing role.
Specimen geometry can influence whether the observed response reflects material deformation, buckling, or another failure mode. This is especially important when test results are applied to components or structural elements rather than simple material comparisons. Engineers therefore interpret compressive strength and deformation together with the specimen’s form and the type of failure observed.
Compressive strength indicates how much compressive loading a specimen can withstand, while stiffness describes its resistance to deformation during loading. These properties answer different engineering questions: strength relates to load capacity, whereas stiffness relates to how much the specimen changes shape. Recording both load and deformation allows the stress-strain response to show these differences.
Failure modes show how a specimen responded as its compressive capacity was reached, rather than only identifying the highest recorded load. Depending on geometry and material, the response may include substantial deformation, buckling, or another form of failure. Examining these outcomes helps engineers judge whether a design is likely to perform acceptably under its intended loading.
The specimen is first positioned between loading platens, then subjected to a controlled compressive force along its longitudinal axis. Throughout loading, the applied load and resulting deformation are recorded. Engineers use these measurements to generate a stress-strain response, determine relevant properties, and examine deformation or failure behavior after the loading sequence.
Loading platens provide the surfaces between which the specimen is compressed, while the test system applies a controlled force. The essential measurements are load and deformation, because together they establish the specimen’s stress-strain response. These data support evaluation of stiffness, compressive strength, deformation behavior, buckling, and failure modes when the specimen and test setup permit such observations.
The results apply to a wide range of load-bearing subjects, including columns, concrete elements, fasteners, composites, and other structural or component specimens. Their usefulness depends on the behavior being investigated, such as material capacity, deformation, buckling, or failure. Testing can therefore support decisions across materials, components, and structural elements rather than serving only one application.
Engineers use the recorded response to compare materials, validate designs, assess quality, and predict performance under compressive loading. The data can indicate whether a specimen’s strength, stiffness, and deformation behavior are consistent with engineering requirements. When geometry and failure behavior are considered as well, the findings provide context for judging load-bearing performance in practical designs.