The floor stand is specially designed for measuring large and complicated parts with the XSTRESS 3000 system. The stand is easily maneuverable and takes the place of a standard goniometer tripod. With the help the stand, the goniometer can be moved quickly to the measurement area, positioned effortlessly in three dimensions, and moved out of the way again just as easily. X-Y-unit for mapping measurements can also be attached to the floor stand (on the right).
The
ring stand
is designed for handling bearing rings easily during the residual stress and
retained austenite measurements with the XSTRESS 3000. The stand makes it easy
to position the measurement point, either on the outer (OD) or inner (ID)
surface of the ring, accurately under the collimator. The goniometer head is
easy to adjust for measuring samples of different sizes making the stand very
practicable. The minimum ID on which the measurements can be made with the
system goniometer head is ca. 150 mm. A complete XSTRESS 3000 ring testing system can consist of
X-Y-table can be placed on the table or attached to the floor stand makes the automatic mapping measurements with the XSTRESS 3000 system possible. With the help of the X-Y-unit you can program the system to move the measurement point in X and Y-directions, and run the stress measurements on the part surface automatically and thus fast and accurately. The X-Y-table consists of three parts: (1) the table, (2) the control unit called Stress Logic and (3) the joystick (remote controller) for manual movements. On the X-Y-table there are motors and proximity switches for both directions; x and y. The X-Y-table can be operated e.g. on the table, or it can be attached to the Floor stand.
A specially equipped table for electropolishing can be included in the XSTRESS 3000 system. The table makes the precise positioning of the sample possible for e.g. depth profile measurements, speeds up the movements between the electropolishing location and safeguards the operator. XSTRESS 3000 Central Unit is placed in a special shelf under the table. The carrier on the table moves the sample to the electropolishing location and back to the X-ray measurement area. Precise positioning of the part in the X-ray measurement area is done by positioning carrier on the table. The X-ray measurement area on the table is enclosed with a safety shield, which can be lifted up for easy moving of the sample on the carrier. The safety switch is equipped with safety interlocks. Table_for_electropolishing, a pdf-file, ca. 320 KB
X- Ray Elastic constant determination System
X-ray Elastic constant determination system allows experimental determination of the Effective X-ray elastic constant EEff. This constant is needed for calculating the macroscopic stresses from lattice strains. This method can be used, when residual stresses are to be evaluated by X-ray diffraction technique, and the Effective X-ray elastic constant of the material is unknown. Stresstech's X-ray Elastic constant determination system
The system
Measurement principle In the X-ray Elastic constant determination process the test specimen is bent applying load that changes in steps. XSTRESS 3000 system makes a normal stress measurement during each step. From each measurement X3000 software calculates the change in interplanar spacing (∆d) between =0 and =orientations of specific planes. This difference is used for the X-ray elastic constant determination. According to the ASM E1426-91 standard the Elastic constant is determined by first calibrating the strain gage by known load, and then bending the bar sample and measuring and recording the strain. With Stresstech's Elastic constant determination system the load is measured with the calibrated load cell and interplanar spacing change measured with the XSTRESS 3000. Hardware The complete X-ray Elastic constant determination system consists of the following components:
Software
Strain Amplifier Control display serves as a digital strain indicator, showing the actual applied load (N) read from load cell or strain read from strain gage. According to the ASM E1426-91 standard the Elastic constant is determined by first calibrating the strain gage by known load, and then bending the bar sample and measuring and recording the strain. With the Elastic constant determination software the measurements can be made by
After the actual measurements have been made, the Effective X-ray elasticity constant is calculated separately from each series and as average value from all of the series. Test specimen can also be bent manually with the system. X-ray Elastic constant determination system, a pdf-file, ca 145 KB
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