Product Test Report

Natural Frequency

Customer:

PEERAPOL CHOTIPAN

77 CHOCKCHAI 4 SOI 120, YEAK 4

LADPRAO SUB DISTRICT, LADPRAO, BANGKOK 10230, THAILAND

Date of test:

24-01-2022 and 30-03-2022

Date of issue:

2022-04-08

Test specimen:

Model Z6 and Z8 with load

Calibration procedure:

The performed tests refer to the vibration calibration by comparison to a reference transducer follow the ISO 16063 part 21

Testing Procedure:

– Experimental setup for the frequency response functions (FRF)
– Acquistion setup bandwidth 10,000 Hz
– Excitation by force hammer and receive response signal by accelerometer
– Resonances of peaks indicate the presence of the natural frequencies of the object under test

Instruments and Software:

A complete list of instruments, hardware, and software, that has been used for this calibration is separately available from the calibration laboratory.

Testing condition:

Environmental conditions:

Pressure:

Temperature:

Relative humidity:

Measurement conditions:

100.7 kPa

22.0 °C

50 %RH

Equipment standards used:

– VibPilot VP8-E by m+p international
– ENDEVCO 41A16
– DJB instrument impact hammer IH/02

Testing Results

Test specimen :

Steel plate on Model Z8
Excitation force on top of the steel plate
Response at the model Z8 with load 626.33 gram

Resonance :

Peak frequency response = 8757 Hz
Damping ratio = 0.09%

P2.1
Test specimen :

Model Z6
Mass : 175 gram
Excitation force on top of the steel plate
Response at the model Z6 with load

Resonance :

Peak frequency response = 9006 Hz
Damping ratio = 0.37%

P4.3
Test specimen :

Model Z8 (S1-8F)
Mass : 358 gram
Excitation force on top of the steel plate
Response at the model Z8 with load 626.33 gram

Resonance :

Peak frequency response = 6932 Hz
Damping ratio = 0.21%

P1.3
Test specimen :

Steel plate on Model Z6 (S1-6F)
Excitation force on top of the steel plate
Response on top of the steel plate with load 1,251.67 gram

Resonance :

Peak frequency response = 5867 Hz
Damping ratio = 0.53%

P5.1
Test specimen :

Model Z8
Model Z8
Mass : 358 gram
Excitation force on top of the steel plate
Response at the model Z8 with load 1,251.67 gram

Resonance :

Peak frequency response = 9522 Hz
Damping ratio = 0.27%

P6.3
Test specimen :

Steel plate on Model Z8
Excitation force on top of the steel plate
Response at the model Z8 with load 1,251.67 gram

Resonance :

Peak frequency response = 6096 Hz
Damping ratio = 0.49%

P7.1
Test specimen :

Model Z6
Mass : 175 gram
Excitation force on top of the steel plate
Response at the model Z6 with load 3,880 gram

Resonance :

Peak frequency response = 7938 Hz
Damping ratio = 2.42%

P8.3
Test specimen :

Model Z6
Mass : 175 gram
Excitation force on top of the steel plate
Response at the model Z6 with load 15,080 gram

Resonance :

Peak frequency response = 8306 Hz
Damping ratio = 5.62%

P9.3
Test specimen :

Model Z8
Mass : 358 gram
Excitation force on top of the steel plate
Response at the model Z8 with load 3,880 gram

Resonance :

Peak frequency response = 8629 Hz
Damping ratio = 1.58%

P10.3
Test specimen :

Steel plate on Model Z8
Excitation force on top of the steel plate
Response at the model Z8 with load 15,080 gram

Resonance :

Peak frequency response = 9493 Hz
Damping ratio = 3.78%

P11.3