Load Frame Testing

Medical Device Testing

Service Overview

Load frame testing is a critical part of product design, development, and manufacture. Well designed test protocols yield the information required to determine the strength of a chosen material, and the reliability of a particular design. Through the application of a cyclic load to an object, we are able to gain an understanding of how the object will perform in actual use. The load application may be repeated millions of times at a frequency of several times per second for fatigue testing.

Additional Information

What equipment do you use for testing?

We perform all of our load frame testing using the Electropuls™ E10000 Linear-Torsion test frame, which is manufactured by Instron: a world leader in the material testing industry. Designed for both static and dynamic testing, it is capable of performing to more than 100Hz with a ±10kN dynamic linear load capacity, and a ±100Nm dynamic torque capacity.

What are the equipment specifications?

Parameter Specification
Linear Dynamic Capacity ±10kN (2250lb)
Linear Static Capacity ±7.1kN (1600lb)
Torsion Capacity ±100Nm (880in-lb)
Linear Stroke 60mm (2.36in)
Rotation ±135°

Why is this type of testing important?

Load frame testing involves subjecting a test sample to various loading conditions to evaluate how it will perform over time. The real world effects of loading and fatigue show up as damage in the plastic and metal components of orthopaedic implants.Results of such tests allow manufacturers to make improvements needed to meet performance specifications and to create safer, stronger, more successful parts and products.

Can tests be performed under physiological conditions?

Tests can be performed in a protein-rich environment to mimic the corrosive media found in the body. For reproducing joint kinematics, please see our hip and knee simulator wear testing service pages.

Standards We Test

ASTM D638

Standard Test Method for Tensile Properties of Plastics

ASTM D695

Standard Test Method for Compressive Properties of Rigid Plastics

ASTM F382

Standard Specification and Test Method for Metallic Bone Plates

ASTM F384

Standard Specifications and Test Methods for Metallic Angled Orthopedic Fracture Fixation Devices

ASTM F897

Standard Test Method for Measuring Fretting Corrosion of Osteosynthesis Plates and Screws

ASTM F1223

Standard Test Method for Determination of Total Knee Replacement Constraint

ASTM F1541

Standard Specification and Test Methods for External Skeletal Fixation Devices

ASTM F1800

Standard Practice for Cyclic Fatigue Testing of Metal Tibial Tray Components of Total Knee Joint Replacements

ASTM F2345

Standard Test Methods for Determination of Static and Cyclic Fatigue Strength of Ceramic Modular Femoral Heads

ASTM F2502

Standard Specification and Test Methods for Absorbable Plates and Screws for Internal Fixation Implants

ASTM F2580

Standard Practice for Evaluation of Modular Connection of Proximally Fixed Femoral Hip Prosthesis

ASTM F2777

Standard Test Method for Evaluating Knee Bearing (Tibial Insert) Endurance and Deformation Under High Flexion

ISO 14879

Implants for surgery -- Total knee-joint prostheses -- Part 1: Determination of endurance properties of knee tibial trays

ISO 15142

Implants for surgery -- Metal intramedullary nailing systems