GB/T 41776-2022 in English

VALID

Forensic sciences—Identification methods for ammunition

Issued on:2022-10-12
Implemented on:2023-02-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $280.00
$272.00

Standard No:	GB/T 41776-2022
Document status:	VALID
Title in English:	Forensic sciences—Identification methods for ammunition
Title in Chinese:	法庭科学弹药鉴定方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2022-10-12
Implemented on:	2023-02-01
Chinese Classification:	A92-Crime judging technology
Professional Classification:	GB-National Standard
Related Topics:	science ammunition Methodology program forensic science modern scientific method scientific method science program forensic science scientific version Phase identification method method science Phase identification method scientific identification Exosome Flow Cytometry Identification Method court drug identification scientific measurement method GBT41776 GB/T 41776-2022 UV identification method of pharmaceuticals Commonly used methods to identify drugs Nanjing third-party drug identification Qualitative identification of ibuprofen using chemical methods Drug identification method requirements Chemical identification method of amino group Qualitative and quantitative methods in drug classification Identification methods drug analysis Commonly used methods for drug identification Chemical methods for identifying drugs include Summary of chemical drug identification methods international forensic science Chemical drug structure identification methods Medical Methodology Validation Commonly used identification methods for chemical drugs Chemical identification method of cadmium ions Chemical drug identification methods Pharmacopoeia Methodology Validation Pharmacopoeial methods for identification of bromides Identification methods of chemical components of traditional Chinese medicine Study on Traditional Chinese Medicine Methodology Methodological Validation Pharmacopoeia How to identify chemicals Pharmacopoeia Methodology Validation Changes in Pharmacopoeia stipulated methods Pharmacological methodology validation Medicinal Chemistry Identification Methods How to identify chemical drugs Amino acid pharmacopoeia identification method Common methods for drug identification Methodological validation of drug identification tests Drug identification methods Scientific identification method of waste cooking oil

《GB/T 41776-2022法庭科学弹药鉴定方法》由TC179（全国刑事技术标准化技术委员会）归口，TC179SC9（全国刑事技术标准化技术委员会痕迹检验分会）执行，主管部门为公安部。

Introduction

Core Identification Technology System

Ammunition Category	Key Features	Size Range	Detection Focus
Throwing Category	Safety Pin Assembly, Delay Device	φ36-60mm｜Height 93-210mm	Fuze Structure Decoding
Launching Category	Belt Marking｜Propulsion Structure	20-380mm Caliber	Body Reconstruction Verification
Airdrop	Stabilizing wing｜Cluster magazine	900-2000mm length	Functional charge analysis

Trinomial test model for evidence analysis

Step 1: Morphological feature verification

According to the three dimensions of the closed structure/surface marker/warhead geometry (see Table G.1 for details), verify whether it meets the 5 types of military manufacturing characteristics of the armored part of the missile contract.

Step 2: Drug ingredient identification

The LIBS detection method is used to conduct elemental spectral analysis of the suspected internal charge, which is required to meet the 10 military explosive ratio standards of GJB3911.

Step 3: Tracing the source of damage effect

The GF function model is established through the explosion crater depth and shape parameter matrix to distinguish between natural explosion and explosive detonation scenarios (see Equation 1 for details).

Explosion trace quantitative analysis matrix

Trace parameters	Ammunition type
Trace parameters	TNT equivalent charge	Ammonium nitrate based explosive
Fireball diameter (cm)	58-160	34-89
Average fragmentation velocity (m/s)	≥1520	≤830
Ignition time window (ms)	2.7-4.5	8.2-12.6

Standard Technology Evolution

Compared with the GJB6115 military calibration standard, this document adds three major innovations to address the particularity of court evidence: ① Residual metal mobility correction factor (L≤0.15) ② Blockchain-based virtual reorganization technology for incomplete ammunition ③ Explosion energy spectrum data arbitration threshold setting function.

More samples: JJG 21-2008 QC/T 942-2021 DL/T 5154-2012

Sample only — not a preview of GB/T 41776-2022

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