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29

2026/06

High-temperature video extensometerLow-temperature strain measurementLarge-deformation testing
Why Are Video Extensometers Better Suited for High/Low-Temperature and Large-Deformation Testing?

High/low-temperature and large-deformation tests are two challenging scenarios in mechanical experiments. The specimen experiences complex temperature changes and may stretch, contract, neck or even fracture. Traditional contact extensometers often face installation difficulties, limited range and complex sensor protec...

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29

2026/06

Video extensometerContact extensometerNon-contact strain measurement
Single-Camera DIC Video Extensometer vs Traditional Extensometers: What Are the Differences?

In material testing, both traditional contact extensometers and single-camera DIC video extensometers can measure strain, but they differ in measurement method, applicable scenarios and user experience. Traditional extensometers clamp on the specimen surface and sense gauge changes mechanically.

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29

2026/06

Video extensometer for tensile testingNon-contact extensometerSingle-camera DIC measurement
Why Are More and More Tensile Tests Choosing the Haytham Video Extensometer?

The core goal of material tensile testing is accurately obtaining deformation and strain data under load. Laboratories traditionally used contact extensometers, but in large-deformation, high/low-temperature, thin-sheet, soft-material and small-specimen testing, the traditional approach is easily affected.

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29

2026/06

Video extensometerSingle-camera DICNon-contact strain measurement
What Is a Single-Camera DIC Video Extensometer? How Haytham Achieves Non-Contact Strain Measurement

Unlike traditional extensometers, the Haytham video extensometer uses single-camera DIC technology: a camera captures specimen surface images, algorithms identify gauge-area displacement changes, and axial strain, transverse strain, displacement and deformation data are computed.

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10

2026/06

DIC full-field strain measurementWelding process verification
Full-Field Strain Measurement for Weldments: Seeing the Deformation of Weld Seam, Base Metal and Heat-Affected Zone

In welding process research, structural verification and quality evaluation, weldment deformation measurement is a key step. Common questions include: where does deformation first occur in the weld area? Is there strain concentration in the heat-affected zone?

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01

2026/06

Crack monitoringCrack gauge
What Is a Visual Crack Gauge? A Look at Haytham's DIC-Based Online Crack Monitoring Device

The visual crack gauge is a device performing non-contact automatic monitoring of structural crack width through image acquisition and DIC algorithms, mainly for online crack monitoring and long-term tracking of bridges, tunnels, dams, buildings and slopes.

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23

2026/05

Fatigue analysisDIC strain measurementHaytham
DIC in Fatigue Testing: How the Haytham Fatigue Frequency-Reduction Module Solves Long-Period Acquisition Challenges

In precision measurement, tool choice matters, but equally critical is how to use the tools. Like photography: no matter how good the lens and sensor, pressing the shutter at the wrong moment misses the decisive shot. The same applies to fatigue testing.

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09

2026/05

Video extensometerThin-film material testing
An Upgrade for Thin-Film Material Testing: The Value of Video Extensometers

As thin-film materials become lighter and finer, traditional contact testing tends to affect data accuracy in practice. For thin specimens, clamping, added mass or local constraints change the material's true load state, making results fail to reflect the material's own behavior.

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30

2026/03

ExtensometerStrain gaugeVideo extensometer
Strain Gauges vs Extensometers vs Video Extensometers in Strain Measurement: Differences and How to Choose

In mechanical property testing, many people focus on the testing machine, loading mode and control system, but what really affects result quality is the unavoidable step of strain measurement — whether elastic modulus, yield behavior or elongation response before fracture.

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24

2026/03

Video extensometerVideo extensometer working principleHaytham video extensometerSingle-camera video extensometerNon-contact extensometerStrain measurementDisplacement measurement
How Does a Video Extensometer Work? Haytham Video Extensometers in Mechanical Property Testing

A video extensometer is a device achieving non-contact deformation measurement through optical imaging, usable for strain and displacement measurement in mechanical property testing. Focusing on the working principle, this article introduces the application advantages of Haytham single-camera video extensometers in met...

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