The Applied Technical Services Family of Companies (FoC) tests the mechanical properties of polyurethane foam according to ASTM F1839 in ourย polymer testing lab. Solid polyurethane foam makes a testing block for medical screws, as the density of the foam block may resemble the density of spongy and porous cancellous bone. The ASTM F1839 standard describes mechanical test methods to assess if a sample has theย appropriate compositionย and properties for medical testing.
Benefits of ASTM F1839 Testing
The mechanical tests in ASTM F1839 help manufacturers make informed decisions about their foam products. Our clients request foam testing for quality control, research and development, and reliable analysis. ASTM F1839 uncovers the properties and behaviors of the polymeric foam, such as composition, density, dimensional stability, compressive strength, compressive modulus, shear strength, shear modulus, and pullout load.
Medical Device Testing and ASTM F1839
ASTM F1839 is an FDA Recognized Consensus Standard for orthopedic testing of Class 2 devices. Before testing the performance of a metallic medical screw or implant, biomechanical engineers may use ASTM F1839 to evaluate the grade and characteristics of the proposedย polyurethane foam testingย medium. Insufficient foam density or rigidity may impact the values derived in related testing standards, such as:
- ASTM F543ย โ Test Methods for Metallic Medical Bone Screws
- ASTM F2502ย โ Test Methods for Absorbable Screws and Plates for Internal Fixation Implants
State-of-the-Art ATS Testing Labs
ATS FoC polymer labs provide material and mechanical testing services for optimized polymer analysis. Our testing equipment can deliver:
- Compressive forces from 0.22 lbf to 10,000 lbf
- Temperatures as low as -100 หC to as high as 350 หC
Shear Test
In aย shear test, our experts intentionally produce a sliding failure by applying opposing forces parallel to the productโs surfaces until the foam fails or deforms. We use shear tests to determine the maximum shear stress the foam endures before deforming and understand the materialโs rigidity. Ultimately, our clients can use shear test results to decide if the material can endure the shear stresses the foam would be subjected to during medical device testing.
Compression Test
The ATS FoC can also perform the mechanicalย compression testย described in ASTM F1839. A compression test involves subjecting the foam specimen to opposing forces that press inward until the sample yields or meets a predetermined compression limit. Our equipment can deliver a uniform load for accurate thickness measurements and compression strength calculations.
The compression test indicates the maximum compressive stress a foam endures before permanent deformation or failure. Our experts can extrapolate from the compression test whether the polyurethane foam has the qualities to act as a reliable testing medium for devices intended for cancellous bone. We also offer compression testing according to other standards, such asย ASTM D695.
Screw Pullout Test
A screw pullout test helps determine the maximum force needed to remove a screw from the polyurethane foam. Our clients may use the test results to compare designs or ensure uniformity before performance testing theย medical device.
About Applied Technical Services
The Applied Technical Servicesย Family of Companiesย (FoC) provides consulting engineering, calibration, testing, and inspection services for a wide range of clients. Some of the industries we regularly support include medical, manufacturing, and automotive. The wide breadth of our capabilities allows ATS to assign experts best suited to fulfill a clientโs specific needs with a quick turnaround rate and effective analysis.
ATS operates several ISO/IEC 17025:2017-accredited labs for mechanical, chemical, electric, and nondestructive testing, and calibration. We operate according to our ISO 9001:2015 registered Quality Management System.
Contact Us
Callย +1 (888) 287-5227ย or complete the form on this page to request ASTM F1839 mechanical testing from ATS. Please direct questions to our customer service representatives by phone. They will gladly provide further information about how ATS can help you.
