根据JIS E 4031 (IEC 61373 / EN 61373)对大型铁路车辆的测试
The JIS E 4031 (IEC 61373 / EN 61373）standard ensures that equipment used in railway vehicles possesses the necessary durability to withstand the vibrations and shocks encountered throughout its service life.
Conventional testing facilities often lack the required capacity.
We provide comprehensive vibration testing services specifically designed for large-scale railway rolling stock components. Our facilities are fully equipped to handle the rigorous demands of these industry standards, ensuring your products meet every safety and performance requirement.
Test overview
■ Purpose
To perform random vibration tests and shock test based on JIS E 4031: 2013 (IEC 61373 Edition 2.0).
We can also handle large railway vehicle products that are difficult to handle with conventional testing equipment due to limited testing locations.
■ EUT
VVVF inverter unit, W2140 × L2800 × H675 mm, approx. 1350 kg
■ Test conditions
［Applicable standards] JIS E 4031: 2013 Category 1 Grade A (or IEC 61373 Edition 2.0)
[Test sequence] Tests were carried out in the following sequence in the vertical, forward/backward and left/right directions respectively.
1. Transfer function test (initial measurement): Transfer function and coherence are measured.
2. Vibration endurance test: 5 hours in each direction 4.
3. Vibration function test: 10 min in each direction (check performance by operating the EUT)
4. Transfer function test (final measurement)
■ Features
・The EUT is directly suspended and mounted on the vibration table, so there is no need to produce a large fixtures.
・The system can be installed once, reducing the time and effort required to change the direction of vibration.
・The crosstalk control system targets zero vibration in any direction other than the direction of excitation.
・The latest standard adds the following to the text: If there is a prior agreement between the recipient and receiver parties, simultaneous tri-axial multi-axial testing may be applied.
・This testing system enables vibration durability tests to be carried out in three axes simultaneously, so that the test time can be reduced from 3 directions × 5 hours (15 hours in total) to a total of 5 hours in three axes simultaneously.
Fig. 1 Vibration endurance test requirement PSD / Fig. 2 Shock requirement PSD
Photo
Memo
Facilities used
Vibration test system: TS-9600-40L
Vibration controller: K2 software MULTI-RANDOM, BMAC.
Test time
3 days (4-5 days including preparation and clean-up)
25 hours (7 hours/day × 3 days + 4 hours of preparation and clean-up)
Accredited Test Laboratory
We also conduct specialized vibration tests that cannot be performed elsewhere, such as vibration testing for large specimens using multi-point control methods.
About Our Contract Testing Services
IMV CORPORATION operates 10 ISO/IEC 17025 accredited independent laboratories globally. Our expert staff provides comprehensive support for the reliability evaluation of all products—including automotive, railway, aerospace, electronics, and marine—delivering impartial, internationally recognized data.