GB/T 34370.8-2020 in English
VALIDNondestructive testing of amusement equipments—Part 8:Acoustic emission testing
- Issued on:2020-11-19
- Implemented on:2021-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
| Standard No: | GB/T 34370.8-2020 |
| Document status: | VALID |
| Title in English: | Nondestructive testing of amusement equipments—Part 8:Acoustic emission testing |
| Title in Chinese: | 游乐设施无损检测 第8部分：声发射检测 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-11-19 |
| Implemented on: | 2021-06-01 |
| ICS Classification: | 97.200.40-Playgrounds |
| Chinese Classification: | Y57-Toys |
| Professional Classification: | GB-National Standard |
| Related Topics: | Non-destructive testing
Non-destructive testing standards field emission detection rides rides Acoustic emission NDT regulations Acoustic emission detection Antibody Upstream Detection amusement gb detection GBT34370.8 GB/T 34370.8-2020 Non-destructive testing Amusement equipment production inspection standards |
《GB/T 34370.8-2020游乐设施无损检测 第8部分：声发射检测》由TC250（全国索道与游乐设施标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
As the 8th part of the GB/T34370 series, this standard specifically regulates the dynamic detection technology of acoustic emission for metal components of amusement facilities, and realizes early damage warning by capturing elastic waves released by internal defects of materials. It is suitable for in-service detection of key load-bearing components such as roller coaster tracks and support structures.
Technical Framework Comparison
| Detection Dimensions | Requirements of this Standard | Conventional Acoustic Emission Detection |
|---|---|---|
| Positioning Accuracy | ≤Sensor Spacing±5% | Usually±10% |
| System Sensitivity | ≥60dB（100-400kHz） | ≥50dB |
| Data Acquisition Rate | 20/sec/channel (peak value) | 10/sec/channel |
Key Implementation Points
Typical Application Scenarios
During the inspection of the supporting columns of a roller coaster in a theme park, a 6-sensor array was arranged using a PCI-2 acoustic emission system. Three Level II acoustic emission sources were found under simulated operating loads, and micro-cracks in the welds were confirmed after re-inspection.
Technological Evolution
Compared with the 2005 version, the 2020 version has the following major upgrades:
1. Added ultrasonic guided wave re-inspection method
2. Refined the amplitude threshold of Q355 steel (80dB)
3. Strengthened electromagnetic compatibility requirements (common mode suppression ≥40dB)
Suggestions for Optimizing the Inspection Process
- Pretreatment stage: Use industrial endoscope to assist visual inspection (refer to GB/T34370.2)
- Sensor arrangement: For special-shaped structures, 25% redundant sensors should be added according to Appendix B
- Data analysis: It is recommended to use wavelet transform noise reduction algorithm to deal with wind load interference
Impact analysis of standard implementation
The mandatory implementation of this standard will:
- Reduce the serious accident rate of amusement facilities by approximately 40% (based on 2016-2020 data model)
- Increase inspection costs by 15-20%, but reduce unplanned downtime by 70%
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