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3-Point vs. 4-Point Bend Testing: ASTM D790, D6272 and C1161 Explained
The difference between 3-point and 4-point flexural testing, with spans, speeds, formulas and fixtures for ASTM D790 (plastics), D6272 (4-point plastics) and C1161 (ceramics), plus common mistakes and videos.
Chris Thomas
18 hours ago6 min read


How to Choose a Universal Testing Machine: Capacity, Frame Type, Software and Accessories (Buyer's Guide)
A practical buyer's guide to universal testing machines: how to size capacity with headroom, single vs. dual column, electromechanical vs. hydraulic, travel and column width, accuracy and calibration, software, accessories, price drivers and when a Mark-10 frame is enough.
Chris Thomas
2 days ago6 min read


Types of Extensometers: Clip-On vs. Video vs. Long-Travel vs. 3D DIC (How to Choose)
Contact or non-contact? Compare clip-on, long-travel, 2D video and 3D DIC extensometers: ISO 9513 and ASTM E83 accuracy classes, which type each standard calls for, chamber testing, cost and setup videos.
Chris Thomas
3 days ago6 min read


ASTM D638 Specimen Types I–V: Dimensions, Test Speeds, Grips and Extensometers
A practical guide to ASTM D638 tensile testing of plastics: Type I, II, III, IV and V specimen dimensions, which type to use, test speeds, the right grips, extensometer requirements for modulus, cutting dies, common mistakes and D638 vs ISO 527.
Chris Thomas
4 days ago7 min read


O-Ring Tensile Testing Equipment: How to Configure a System for ASTM D1414
The exact equipment configuration for tensile testing finished O-rings to ASTM D1414: frame and load cell sizing, the motorized spool fixture, the 500 mm/min speed requirement, software features, elongation calculations and D395 compression set.
Chris Thomas
5 days ago8 min read


Textile Testing on a Universal Testing Machine: ASTM D5034, D5035, D751, D3787/D6797 Ball Burst and More
A complete guide to textile testing on a universal testing machine: D5034 grab, D5035 strip, D751 coated fabrics, D3787/D6797 ball burst, tear, seam, yarn, webbing and geotextile tests, with the grips, fixtures and videos for each.
Chris Thomas
6 days ago18 min read


Aerospace Composite Testing: Carbon Fiber Shear Fixtures, Galdabini UTMs and ASTM Methods for the Space Boom
Aerospace and space programs are driving record demand for carbon fiber testing. See our D5379, D7078, D6641, D2344 and open-hole fixtures, programmable Galdabini UTMs, video extensometers, temperature chambers and high-temperature grips.
Chris Thomas
7 days ago8 min read


Peel Test Fixtures Guide: 90°, 180°, T-Peel, Floating Roller and Climbing Drum Peel Testing with a Mark-10
A detailed guide to every Universal Grip peel fixture: 90°, 180°, T-peel, floating roller, climbing drum, tape-roll and credit-card peel, plus why a Mark-10 is an economical way to peel test.
Chris Thomas
Oct 813 min read


Temperature Chambers for Universal Testing Machines: A Buyer's Guide to Hot and Cold Testing (-80 °C to +350 °C)
How to choose a temperature chamber for tensile, compression and flexure testing: temperature range, LN2 vs. mechanical cooling, grips and extensometers at temperature, and fitting a chamber to an Instron, MTS, Zwick or Shimadzu frame.
Mark Edwards
Oct 55 min read


Video Extensometer Retrofit: Add Non-Contact Strain Measurement to Your Instron, MTS or Shimadzu Machine
A video extensometer retrofits to the testing machine you already own. How it connects to Instron, MTS, Shimadzu, Zwick and Tinius Olsen frames, which model fits your standards, setup steps, cost and FAQs.
christopherthomasb
Oct 56 min read


Composite Test Fixture Buyer's Guide: ASTM D3039, D5379, D7078, D2344, D6641 and More
Which fixtures does a composites lab actually need? A practical guide to ASTM D3039 tensile grips, D5379 and D7078 shear fixtures, D2344 short-beam, D6641 CLC compression and open-hole fixtures.
christopherthomasb
Oct 34 min read


Mark-10 Test Frame vs. Universal Testing Machine: Which Does Your Lab Need?
Mark-10 force frame or full universal testing machine? Compare capacity, tests, strain measurement and à la carte software so you buy what your lab needs and nothing more.
Mark Edwards
Oct 34 min read


ASTM D3787 Ball Burst Testing: A Complete Guide to the UniversalGripCo Ball Burst Puncture Fixture
Introduction In the field of textile and flexible material testing, understanding how a material behaves under multidirectional stress is critical for predicting real-world performance. Fabrics used in apparel, medical textiles, industrial materials, and geotextiles are frequently subjected to forces that do not occur purely along a single axis. Instead, these materials often experience localized pressure and multi-directional stress , which can lead to puncture or bursting f
Mark Edwards
Mar 267 min read


UniversalGripCo Arbor Press: Precision Force Application for Laboratory and Materials Testing
Arbor Press Cutting Sample Introduction In materials testing laboratories and engineering environments, many tasks require controlled compressive force to assemble components, prepare test fixtures, or install precision mechanical parts. While large automated systems such as universal testing machines handle tensile and compression testing, technicians frequently rely on smaller manual tools to prepare equipment and samples before testing begins. One of the most reliable too
Mark Edwards
Mar 266 min read


Environmental Chambers for Universal Testing Machines
Modern environmental chambers are designed to operate with any universal testing machine, regardless of manufacturer.
christopherthomasb
Feb 274 min read


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 characteriz
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
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