m be certain. Model 632.
Copyright information Trademark information © 2014 MTS Systems Corporation. All rights reserved. MTS is a registered trademark of MTS Systems Corporation within the United States. These trademarks may be protected in other countries. All other trademarks or service marks are property of their respective owners. Publication information 2 Manual Part Number Publication Date 011565200 A July 1986 011565200 B July 2014 Model 632.
Contents Introduction 5 Specifications 7 Safety Information 9 Safety Information Overview Read all manuals 9 9 Personnel Qualifications System Hazard Zones 10 10 Avoid Pinch and Crush Points 10 Installation 11 Specimen Mounting Cabling 11 13 Maintenance 15 Model 632.
Model 632.
Introduction The Model 632.85 Biaxial Extensometer provides axial and transverse outputs from a single extensometer. The biaxial extensometer is typically used when performing Poisson ratio testing, composites testing and metal formability testing. The extensometer consists of three sensor units. Each sensor unit uses precision resistance-type, foil strain gages bonded to a metallic element to form a Wheatstone bridge circuit.
The design of the conical contact points allows the extensometer to be used on a wide variety of specimens. These same conical points are usable on specimens with circular as well as rectangular cross sections.
The extensometer is designed with multiple flexures for the necessary degrees of compliance to provide for a secure, determinant attachment to the test sample. This unique patented flexure design (covered by patent number 4,527,335) provides approximately equal contact force to be transmitted by each of the four conical contact points. Thus, the extensometer maintains positive contact even with a somewhat nonuniform test sample or one which deflects somewhat nonuniformly under static or dynamic loading.
Introduction Model 632.
Safety Information Safety Information Overview Extensometers are used to provide specimen feedback in material test systems. Operators using extensometers should be aware of the system level safety information. Test systems are designed to generate single-axis or multi-axial motions and forces simultaneously in a controlled laboratory environment and impart these motions and forces into a test specimen that is secured to the system.
Personnel Qualifications Do not allow unqualified personnel to perform any of the system maintenance, setup, or operating procedures. Operation and maintenance of the system by unqualified personnel can expose them and others to hazards that can cause damage to equipment and injury or death. The system maintenance, setup, and operating procedures should only to be performed by trained personnel. MTS offers training classes that provide the necessary skills training.
Installation Specimen Mounting The extensometer is mounted on the specimen by the use of the conical points. Perform the following procedure to mount the extensometer on a specimen. Item Description 1 Axial sensor unit A 2 R dimension 3 Axial sensor unit B 4 Compliance flexure 5 Remove screws on underside of compliance flexure to separate the slide bracket form the compliance flexure.
Item Description 13 Overtravel stop plate 14 Conical point contact 15 Conical point vertical adjustment 16 Zero set pin 1. Ensure the zero set pins are installed in the extensometer (refer to above figure). 2. Slightly loosen the socket head cap screws which secure axial sensor unit B to the positioning arm. Note For specimens where the R dimension (refer to the specifications section) is greater than 1.1 in. (28 mm), perform steps 3 through 5 to set the extensometer transverse gage length.
Cabling The cable connector for the 632.85F is a PT01A-10-6P. The mating connector should be a PT06A-10-6S. Shown below is a representation of the connector and the wiring diagram. Shunt R4 1 2 Red 4 3 Shunt R3 Model 632.
Installation Model 632.
Maintenance The conical points must be properly aligned to minimize the crosstalk between the sensor units. Perform the following procedure to align the conical points. Item Description 1 Conical point trim adjustment (lower) 2 Overtravel stop plate (2) 3 Flush adjustment of conical point 4 Axial gage length 5 Conical point trim adjustment (upper) 6 Conical alignment fixture shown for trim adjustment 7 Trim adjustment slot 8 Conical alignment fixture shown for flush alignment 1.
Note If the conical points require flush mounting, perform step 3A. If the contact points require a trim adjustment, perform step 3B. 3. Place the flat end of the alignment fixture against the side of the sensor unit containing the replacement conical point (refer to above figure). Move the conical point until the flat end is flush to the flat surface of the alignment fixture. 4.
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