Enabling Innovation in Medicine and Healthcare

Uniaxial Testing

Purpose:

Uni-axial tension and compression testing are used to determine a number of important properties of a material or structure, including ultimate tensile strength, Young's modulus and yield strength. Uni-axial testing is typically used to evaluate isotropic materials (properties are the same in all directions) or when the operational load is always in the same direction of alignment with the material. 

Applications:

One of Zymetrix' core areas is in the mechanical characterization of biomaterials. As a Level 2 Biosafety facility, Zymetrix has performed testing on both animal and human tissues, including tensile testing of pericardium, vasculature, skin,  tendon and ligament.   Tensile testing of engineered biomaterials has included nitinol, collagen scaffolds and hydrogels.  Our experience in compressive testing of biomaterials extends to bone, articular cartilage, tissue engineered cartilage, hydrogels and nanoparticles. 

Our capacity for uniaxial testing is extended to industrial materials such as plastics, elastomers, composites, rubbers, fabrics,  and adhesives.

Equipment:

Zymetrix is equipped with four different machines for conducting uniaxial tension tests.  All machines are from the Bose Electroforce Systems Group and use the Electroforce linear motors which have low friction and fidelity of control. 

Model Force Displacement
  Peak Capacity Measurement Range Speed Stroke Length
Electroforce 3220 450 N

Five load cell ranges:

2.45N, 9.81N, 22.2N, 225N, 450N
3.2 m/s 13 mm
Electroforce 3330 3000 N

Three load cell ranges:

225N, 450N, 3000N

2.0 m/s 25 mm
Electroforce 3550 15,000 N

Two load cell ranges:

1100N, 15,000 N

1.5 m/s 50 mm
Biodynamics 200 N     13 mm

 

 

Each device is equipped with a digital video extensometer for measurement of strain.

Case Study:

For an example of Zymetrix' work in testing tensile properties of biological tissues, click here, and for compressive properties, click here.