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Fracture Mechanics Crack Opening Displacement (COD) Gages Series 3541

The 3541 Clip-On Displacement Gages are designed to perform standard static and cyclic ASTM, ISO and BS fracture mechanics tests to determine fracture mechanics parameters such as JIC, KIC, R-curve, fatigue crack growth rate (da/dN), and testing to standards such as E1820, E399, E647, ISO 12737, ISO 12135, ISO 15653, BS 7448, etc.

These COD gages conform to the requirements of E1820 (the replacement for E813 and E1737) for JIC and R-curve determination. Special configurations are available to meet the requirements of ASTM E399 for fracture toughness (please consult the factory for these configurations). In addition, the modified groove design complies with E1820 tests where greater stability and accuracy results from the sharper groove root. Clip-on gages are used for a variety of fracture mechanics tests, including compact tension, arc shaped, disk shaped, bend specimens or other specimen geometries in compliance with ASTM and other standards organization's test methods. Clip-on gages can be used directly on test specimens where the knife edges are integral with the test specimen or, alternately, with optional bolt-on knife edges mounted on the test specimen.

Features

May be left on through specimen failure.
Full bridge, 350 ohm strain gaged design for compatibility with nearly any test system.
Fully enclosed gages are protected from accidental damage.
Sharp grooves per ASTM E1820, E813, and E399 for improved stability when mounted.
For da/dN testing or pre-cracking, where maximum frequency (>50 Hz) is required, minimum measuring ranges are recommended.
For KIC/JIC testing, maximum accuracy is achieved with the smallest measuring range and the largest gauge length that will perform the test.
Maximum operating frequency may be from 5 Hz to >200 Hz depending on COD gage and test apparatus configurations.
Option for Shunt Calibration System for on-site electrical calibration.
Includes high quality foam lined case.

Product Info EN

Fracture Mechanics Crack Opening Displacement (COD) Gages Series 3541

Fracture Mechanics Crack Opening Displacement (COD) Gages Series 3541

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Walter + Bai AG
Prüfmaschinen - Testing Machines
Industriestrasse 4
8224 Löhningen
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Tel. +41 (0)52 687 25 25
Fax +41 (0)52 687 25 20
info@walterbai.com

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