RMS Foundation
Bischmattstrasse 12
2544 Bettlach
Switzerland
Phone +41 32 644 2000
METHODS
Customized measurement solutions
Use of mobile measurement technology, often in combination with other test methods, for example to measure additional forces, torques or distances. Over 15 different sensors and various hardware are available for measurement- and charge-amplification. Optical measurement methods, such as 3D deformation analysis (DIC, Digital Image Correlation), can also be combined with static or dynamic testing machines.
According to which standards do we test?
Whenever possible, we carry out our testing services in accordance with or based on international standards. With the method described here, however, a solution tailored to specific customer requirements is usually implemented.
Which devices do we use?
The service offered can be carried out with the following equipment, among others:
- Various measuring amplifiers, including the HBM MX410B
- Charge amplifier HBM CMD600
- Various force sensors, e.g. HBM CFT 20 kN for impacts or Kistler 9001A 0-6 kN for static compressive forces
- Torque sensors, e.g. Kistler 4502A2HA, 0-2 Nm
- Distance sensors: With laser, e.g. Micro Epsilon OptoNCDT-ILD 1402 (max. 50 mm distance). With sensing device, e.g. HBM LVDTs (HBM WI/5mm-T and many others)
- GOM Aramis system with ATOS Core 300 sensor
- Further options possible
For which material tests do we use this method?
We use customized measurement technology for a variety of mechanical testing tasks, for example:
What you should know about this method?
Which test methods are usually supported by other measurement technology components?
A few examples are:
- Our torsion testing machine is used to apply a certain torque and at the same time a small, additional force sensor is used to measure a force at a point relevant to the product.
- Quasi-static compression and tensile tests have also been accompanied by displacement sensors
How many measured variables can be recorded simultaneously?
The maximum number of sensors that can be used simultaneously is currently eight. However, the number can also be lower depending on the measurement frequency or other factors.
When is it interesting to use the DIC method?
A few examples are:
- In static tests, the method was used to determine the ratio of the applied load to a moving distance on an implant.
- In dynamic tests, a distance can be measured at a certain regularity (e.g. every 100 or 1000 cycles) in order to be able to examine the fatigue behavior optically and metrologically at precisely defined positions over hundreds of thousands of cycles.
Can the DIC method also be used to measure on inclined surfaces?
Surfaces at an angle to the sensor have a certain potential for incomplete data recording. We usually use adapters that are as small as possible, which we stick onto the test specimen to overcome this challenge easily and cost-effectively.
Can testing tasks with additional measurement technology also be offered validated?
In principle, testing tasks can also be validated when using mobile measurement technology. In most cases, however, the effort involved is high, so that validation is not carried out. Nevertheless, the sensors are calibrated either according to DaKKs or according to the manufacturer's factory standard.
Who is your contact person?
Stefan Jakobs
Team Leader Bio- & Structural Mechanics
+41 32 644 2033