ADMET Micro EP Universal Testing System:
Contract manufacturers can offer testing services to increase revenue
Is the thought of test equipment being too expensive or too hard to operate, holding you back from offering this service to your customers?
When asked, will you perform the mechanical property testing of a prototype or finished product, do you refer to a 3rd party test lab? You could be generating revenue by offering testing. Many times a simple tensile test, compression test, or torsion test is all that is needed.
How to set up your business to get ready for testing.
What makes an accurate universal testing machine?
Accurate mechanical testing requires not only familiarity with measurement systems, but also some understanding of the planning, execution, and evaluation of experiments. Much experimental equipment is often “homemade,” especially in smaller companies where the high cost of specialized instruments cannot always be justified. If the designer of the “homemade” equipment does not carefully consider how the design functions under test conditions, then the stress vs. strain diagram may be in error.
ACCURACY, REPEATABILITY, RESOLUTION
Common terms in materials testing
The terms below are commonly referenced in the world of materials testing. Many of these definitions are taken from ASTM E6 Standard Terminology Relating to Methods of Mechanical Testing.
Ductility: The ability of a material to deform plastically before fracture.
Elastic limit: The greatest stress that a material is capable of sustaining without any permanent deformation remaining upon complete release of stress.
Mechanical testing of nanocomposites and tiny devices
Nanocomposites are typically polymer-based materials in which the microstructure and mechanical behavior are tailored via the incorporation of additives or nanometer-sized particles. They have significantly enhanced mechanical performance, as well as other properties such as electrical conductivity, thermal conductivity, and resistance to permeability and abrasion.
Validate device for hip fracture healing with ADMET
UMass Biomechanical Research Relies on ADMET
Factors that affect mechanical property measurement
• Hysteresis is the maximum difference in sensor output between measurements made from 0 to 100% full scale output (FSO) and from 100 to 0% FSO. Although hysteresis is easily measured, its mechanism is not fully understood.
Mechanical property testing doesn’t need to be expensive or difficult
Whether you are in medical device production or R&D testing, mechanical property testing is a critical step in ensuring the quality of your product. Unfortunately, the testing process can be expensive and time consuming. Some companies hire specialized engineers to maintain large and expensive pieces of testing equipment, others decide to outsource their testing needs to laboratories that may or may not understand the needs of your customers. At ADMET, we decided to make mechanical testing easy and affordable.
How to Perform a 3 Point Bend Test on a Universal Testing Machine
Bend testing (also flex or flexural testing) is commonly performed to measure the flexural strength and modulus of all types of materials and products. This test is performed on a universal testing machine (tensile testing machine or tensile tester) with a 3 point or 4 point bend fixture. Most common for product testing is the 3 point test.
The key analysis when performing bend testing are:
ASTM F1798 Spinal Interconnection parts Testing System
ASTM F1798 describes the procedure for testing subassemblies and interconnection mechanisms to determine the fatigue strength and resistance to loosening during arthrodesis.(fusion)
Hooks, screws, and bands connect to rods and plates. These connected parts form Spinal Implant Subassemblies. In this specification the parts are tested in a saline or simulated body fluid in vitro to predict the behavior of the parts in vivo performance.
ASTM F2009-Testing Systems for Axial Disassembly Force of Taper
Tapers are used in modular devices, like shoulder and hip prothesis. This method assesses the axial locking forces of these tapers. Full description of ASTM F2009 can be found at www.astm.org. The ADMET eXpert 2600 will perform the Constant Rate Assembly and Disassembly Procedure and provide the appropriate fixtures needed to secure the tapers during testing.