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ASTM & ISO Testing


ASTM C1161: Standard Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature
Introduction to ASTM C1161 Advanced ceramics are widely used in applications where high stiffness, thermal stability, wear resistance, and chemical inertness are required. Unlike metals or polymers, however, ceramics exhibit little to no plastic deformation and fail in a brittle manner. Because of this behavior, traditional tensile testing is often impractical or unreliable for ceramic materials. Instead, flexural strength testing has become the primary method for characteri
Mark Edwards
Jan 307 min read


ASTM D1781 Climbing Drum Peel Test Fixture
This article provides a comprehensive technical overview of ASTM D1781, including the principles of the climbing drum peel test, required equipment, specimen preparation, grips and fixtures, data analysis, and best practices for achieving reliable and repeatable peel adhesion results.
Mark Edwards
Jan 237 min read


ASTM D5458: Standard Procedures for Tensile Testing Using Universal Testing Machines
ASTM D5458 provides guidance on test setup, equipment selection, and procedural considerations that help laboratories generate repeatable, comparable, and defensible tensile test data.
Mark Edwards
Jan 236 min read


Gauge Length Selection for Video Extensometers Across ASTM Standards
This article provides a detailed, standards-driven guide to gauge length selection for video extensometers, with practical examples from ASTM D638, ASTM D412, ASTM E8, and ASTM D3039.
christopherthomasb
Jan 165 min read


The Complete Guide to Sample Marking for Video Extensometers
Whether performing routine tensile testing, measuring Poisson’s ratio, or conducting full-field strain analysis, correct sample marking is essential for reliable, repeatable strain data. This article provides a comprehensive guide to sample marking for video extensometers, explains how digital image correlation (DIC) works, and outlines best practices for achieving high-quality strain measurements across a wide range of materials.
christopherthomasb
Jan 75 min read


Video Extensometers VS. Clip-On Extensometers
If you’re trying to choose between a video (non-contact) extensometer and a clip-on (contact) extensometer, the best answer depends on what you test, how often you change specimen types, your accuracy needs, your risk tolerance for damaging samples, and—very often—budget.
christopherthomasb
Dec 31, 20256 min read


How to Choose the Right Grips for Tensile Testing
Selecting the correct grips for tensile testing is one of the most important — and most overlooked — decisions in any materials testing setup.
christopherthomasb
Dec 29, 20256 min read


What is a Universal Testing Machine?
A Universal Testing Machine (UTM) is a mechanical-testing instrument designed to apply controlled axial forces (and sometimes other modes of loading) to material specimens and then measure the specimen’s response (force, displacement, strain, deformation, failure) under well-defined conditions.
christopherthomasb
Nov 3, 20258 min read


Stringing Together our Rope Testing Grips, String Grips, and Wire Grips ASTMs
One of our bollard grips for our Stringing Together our Ropes, Strings, and Wire Grips ASTMs Blog Post
christopherthomasb
Sep 17, 20254 min read


Thermal Environmental Chambers for Universal Testing Machines
Universal Grip’s Thermal Environmental Chambers are engineered to provide controlled hot and cold test environments for tensile, compression, flexural, peel, shear, and other mechanical tests.
christopherthomasb
Aug 8, 20254 min read


Clip-On Extensometer Purchasing & Configuration Guide
A clip-on extensometer is a mechanical strain measurement device that attaches directly to the specimen during a tensile or compression test.
christopherthomasb
Aug 7, 20253 min read


Understanding ASTM D624: Tear Strength Testing of Vulcanized Rubber and Thermoplastic Elastomers Using a Mark-10 Tensile Testing Machine
ASTM D624 tear strength testing, when performed using a Mark-10 Tensile Testing Machine with Universal Grips Fixtures, provides accurate and reliable measurements of elastomer durability—an all-in-one solution offered by Universal Grip Co.
christopherthomasb
Aug 1, 20253 min read


Step-by-Step Guide: Conducting the Charpy Impact Test (ASTM E23)
tep-by-Step Guide: Conducting the Charpy Impact Test (ASTM E23)
christopherthomasb
Mar 30, 20252 min read


How to Run ASTM E8 - Equipment List & Procedure
The ASTM E8 tensile test is a fundamental method for evaluating the mechanical properties of metals. Proper setup is critical.
christopherthomasb
Mar 29, 20253 min read
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