Welcome to DEPA

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DEPA has the following superior features which make it a better system for non-destructive testing of elastic properties of materials and products :

1. Sturdy and reliable non-contact sensor with in-built electronics to enhance signal to noise ratio.

2. Complete frequency spectrum response of the test sample is displayed on the computer screen; Range is from 2 Hz to 50 KHz.

3. Software adjustable signal thresholds

4. Mouse activated cursor for frequency determination of any point on the displayed frequency spectrum

5. Fast Fourier Transform (FFT) used to analyze the frequency spectrum response to correctly and accurately determine resonant frequency, damping coefficient, etc.; Readings have high repeatability.

6. On-line statistical evaluation of results to provide enhanced precision

7. On-line logarithmic damping coefficient [Q^-1] display along with mean square error (MSE) values thereby indicating accuracy and reliability of readings. (Click here for damping coefficient details)

8. Works well for low modulus materials too in which impulse excitation waves dampen quickly making it difficult to properly determine their elastic properties; Examples of such materials are rubber, resin composites, etc. Also works well for high modulus materials in which impulse excitation waves die quickly because of test piece size like small ceramic pieces whose fundamental frequency is at the higher end of the spectrum.

9. A secondary calibration standard is provided traceable to our primary standard room sample the values of which are in turn traceable to National Physical Lab, New Delhi. Hence testing is immediately to international standards.

10. With the exception of proprietary sensor and software, the system uses all standard equipment / accessories. The sensor is very sturdy and typically does not require any maintenance / repairs. Hence, reliability and serviceability of the system is excellent.

11. Sorting and grading program provide in Bulk production inspection alongwith bar graph and statistics. You can sort materials into pre-defined groups.

12. DEPA comes "automation ready". Provided with digital outputs, DEPA automates the sorting process.

13. Mathematical simulation : You can write and FFT view an equation that simulates the test object you are working with.

14. Mathematical simulation is also used to check the software accuracy and for training.

15. The standard RS232C output can integrate with ink jet marking devices so that inspection, marking and sorting can be done at the same station.

16. DEPA outclasses and is more economical than any equipment in its class.

17. Test results can be saved to XL files. Whenever, the same file is opened now test results append automatically. Hence, DEPA documents quality over protracted period of time.

18. The digitized signal from the tested object can be stored, transmitted over e-mail, as there is an option to save it as a data file. DEPA can read the data file to re-construct the signal.

19. DEPA provides complete fesibility in entering data in any units of your choice. e.g. mass could be in pounds, grams, kilograms, miligrams etc.,

20. International Front end : The user screen can be ordered in any language of your choice - English, German, Spainish etc.,