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題名 | 機車安全帽護顎標準之探討=The Study of the Chin Bar Standard Problem of Motorbike Helmet |
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作者 | 張立東; 張志涵; 林千玉; 張冠諒; | 書刊名 | 中華醫學工程學刊 |
卷期 | 17:4 1997.12[民86.12] |
頁次 | 頁223-230 |
分類號 | 410.1644 |
關鍵詞 | 臉部; 撞擊; 標準; 加速度; Face; Impact; Standard; Acceleration; |
語文 | 中文(Chinese) |
中文摘要 | 機車騎士頭臉部傷害各國皆是一普遍而嚴重之流行病。 而以安全帽保護頭部之功 效已不容爭議,但是其防護臉部直接撞擊之護顎,郤為人所忽略,而且臉部創傷之機率及所 造成之腦部傷害,與頭部外傷者相近。 美國之 SNELL 基金會及英國國家標準是目前極少數 對安全帽護顎有所規範之標準,然其檢測安全理念互異,僅能檢測護顎與帽體間之整體剛性 表現,而且與實際使用時之意外發生狀況不符。本研究建立一模擬臉部撞擊之測試程序:以 標準頭型緊貼固定於護顎內側,由高處墜落撞擊地面之平面鋼砧,藉著頭型承受之撞擊能量 、加速度及格氏嚴重指數,作為評判之準據。 並且對照 SNELL 及英國國家標準之檢測,結 果顯示此兩者之評判不一致,檢測方法亦不合理,縱使符合前述兩項標準要求之護顎,仍無 法防止佩戴者因臉部撞擊而造成之腦部傷害。 |
英文摘要 | The craniofacial injuries for motorcyclists are widespreading and serious problems around the world. The incidence and severity of brain injuries resulted from facial and cranial injuries and almost the same. However, the motorbike helmet has drawn a lot of research attention in preventing brain injuries while the chin bar, which protects face impact directly, has been ignored for a long time. Snell Memorial Foundation of U.S.A. and British are the few that have enacted the safety standard for the chin bar. Nevertheless their basic concepts are different from each other, and only the integral stiffness between chin bar and helmet is evaluated, which cannot represent the real world situation when accidents occur. A testing procedure for the chin bar was hence established in this study: a standard metal headform was secured to the helmet with a chin bar, then dropped face down along a rail to impact a flat steel anvil on the floor. The impact energy, acceleration and Gadd's severity index were measured from the headform as judgment criteria. The results, compared with the Snell and British standard, show that both standards testing methods were unrealistic. Therefore, the chin bars which were approved by the above standards could not prevent the brain injuries resulted from the face impact. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。