GA/T 950-2019 in English
VALIDV50 test methods for ballistic materials and products
- Issued on:2019-09-10
- Implemented on:-
- File Format:PDF
- Delivery:Via email within 1~3 business days
$321.00
| Standard No: | GA/T 950-2019 |
| Document status: | VALID |
| Title in English: | V50 test methods for ballistic materials and products |
| Title in Chinese: | 防弹材料及产品V50试验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2019-09-10 |
| Superseding: |
GA 950-2011 V50 test method for ballistic materials and products
|
| ICS Classification: | 19.020-Test conditions and procedures in general |
| Chinese Classification: | A94-Police-used device and tool |
| Professional Classification: | GA-Security |
| Related Keywords: | v50 test ballistic system construction
v50 test methods ballistic materials standard ballistic gun multi-scenario test capabilities verification |
| Related Topics: | bulletproof
Reagents and materials ga method material product Experimental materials and experimental methods Experimental materials and methods bulletproof material Oxygen bomb material bulletproof material Plastic materials and products Bulletproof test method for shelter ga/t1012-2019 ga/t49-2019 |
本标准规定了对防弹材料及产品的弹道极限 V50 进行评价的技术要求、试验方法、V50 值计算与修正、试验报告的编写等。
本标准适用于各种防弹材料及产品弹道极限 V50 的测试与评定。
Introduction
Analysis of core changes in the standard
| Revision module | 2011 version requirements | New version changes | Technical impact |
|---|---|---|---|
| Speed measurement system error | Fixed threshold judgment | Dynamic judgment of different speed segments (600m/s as the boundary) | Improve test accuracy in high-speed segments |
| Simulated fragment specifications | Only 1.1g columnar fragments are specified | Six new specifications of fragments are added (Appendix A) | Expanded multi-scenario test capabilities |
| Verification plate material | Aluminum alloy grade not specified | 2024-T4 aluminum alloy (GB/T 3880.1) specified | Uniform damage judgment standard |
Key technical points of V50 test
Ballistic system construction specifications
The system must include: standard ballistic gun, velocity target array (spacing ≥1m), verification plate (300×300mm/90×110mm), and backing putty (600×600×100mm). The annual calibration of the speed measurement target requires that the system error is ≤0.3% (≥600m/s).
Judgement of mixed result area
When the highest blocking speed is greater than the lowest penetration speed:
- Difference ≤ 38m/s: adopt the six-shot evaluation method
- 38-45m/s: adopt the ten-shot evaluation method
- ＞45m/s: more than twelve rounds of data are required
Implementation difficulties and solutions
Bullet velocity attenuation correction
The formula is: V50 = v/(1+αx)
The attenuation coefficient α needs to be determined by:
1) Double velocity target actual measurement method (recommended)
2) Formula calculation method (projectile shape coefficient needs to be input)
Special material testing
For laminated composite materials:
- The four-round evaluation method is prohibited
- ≥6 rounds of valid data must be ensured
- Backing materials must be pre-calibrated (GA 141-2010)
Standard Evolution Analysis
Compared with GA 950-2011, this standard has the following major enhancements:
1) Test traceability: New requirements for speed measurement system calibration records
2) Environmental control: Clarify the temperature control range of 0-35℃
3) Safety redundancy: The sabot interception device becomes a mandatory component
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