消防头盔非贯穿性损伤对抗冲击加速度能力影响分析  

Impact analysis of non-penetrating damage of fire helmet against impact acceleration

作　　者：孙宇鹏 黄冬梅 李瑞 杨华 SUN Yu-peng;HUANG Dong-mei;LI Rui;YANG Hua(College of Quality and Safety Engineering,China Jiliang University,Zhejiang Hangzhou 310018,China;Ji'nan Fire and Rescue Division,Shandong Ji'nan 250101,China)

机构地区：[1]中国计量大学质量与安全工程学院,浙江杭州310018 [2]济南市消防救援支队,山东济南250101

出　　处：《消防科学与技术》2022年第5期671-675,共5页Fire Science and Technology

基　　金：国家重点研发计划项目(2018YFC0810600)。

摘　　要：通过对消防头盔进行的非贯穿性损伤实验,分析头盔的非贯穿性损伤对冲击加速度的防护效果的影响。首先对消防头盔进行损伤性实验,采用钢锥在1,2,3,4 m对消防头盔进行模拟冲击,讨论不同冲击高度对消防头盔的损伤情况,其次对不同损伤情况下的消防头盔对冲击加速度的防护性能进行分析。研究表明,在发生冲击时,头盔受损情况与冲击加速度成正比;头盔的损伤情况分为冲击凹陷损伤以及微裂纹损伤,冲击凹陷损伤的情况多于微裂纹损伤;在同种损伤情况下,损伤情况严重时,冲击加速度碰撞发生时间变慢,冲击加速度变大;冲击凹陷损伤处的抗冲击加速度的能力要弱于发生微裂纹形变损伤处。This paper analyzes the impact of non-penetrating damage to helmets on the protective effect of impact acceleration through non-penetrating damage experiments conducted on fire helmets. Firstly, damage experiments were conducted on fire helmets with steel cones at the height of 1, 2, 3, 4 m to discuss the damage caused by steel cones at different height. Then the influence on the protection performance of fire helmets against impact acceleration under different damage conditions was analyzed. Studies have shown that in the event of an impact, helmet damage is proportional to the impact acceleration;the damage on the helmet can be divided into impact depression damage and microcracking damage, more of the former than the latter;when the damage type is the same, the more severe the damage, the later the time of the impact acceleration collisions,and the bigger the impact acceleration;the resistance to impact acceleration at the impact depression damage is weaker than at the microcrack deformation damage.

关 键 词：消防头盔 非贯穿性损伤 冲击加速度 

分 类 号：X932[环境科学与工程—安全科学] TU998.13[建筑科学—市政工程]