3 0 0 0 OA 自動車フロントガラスの損傷に基づく発射弾丸入射角の実験的推定
- 著者
- 平川 俊介 案部 雄一郎 山下 珠希 内野 隆一郎 丸田 英基 才本 明秀 石松 隆和
- 出版者
- 日本法科学技術学会
- 雑誌
- 日本法科学技術学会誌 (ISSN:18801323)
- 巻号頁・発行日
- vol.20, no.2, pp.125-140, 2015 (Released:2015-07-17)
- 参考文献数
- 15
Handgun bullets fired toward the windshield of an automobile sometimes ricochets. In such a case, we must estimate the type of bullet and direction of shooting from the damaged windshield. The purpose of this study is to obtain a method to estimate the fired direction of a handgun bullet from the fractured windshield. We test fired bullets to an automobile windshield with various incidence angles. The thickness of the windshield is slightly different from model to model of the automobiles. In the beginning, we examined the strength of the automobile windshield of various car models. First, we examined the static failure strength of the windshield by an indentation test. In this test, fracture load and the amount of indentation were measured on windshield samples cut from ten models of Japanese automobiles. Next, we test fired a handgun in order to examine the relation between the trajectory of a bullet and the collision marks on the windshield. The cartridges used in these test firings were 38SPL. lead round nose (LRN) bullet and full metal cased (FMC) bullet. In the results of static indentation test for different car models, there was found to be almost no differences in the relationship between fracture load and indentation depth. With the LRN bullet, bullets perforated the windshield when the incidence angle was less than 45 degrees and ricocheted when the incidence angle was greater than 60 degrees. In these cases, a characteristic damage was left on the windshield. On the other hand, FMC bullets of 38SPL. perforated the windshield when the incidence angle was less than 60 degrees and ricocheted when the incidence angle was greater than 70 degrees. Based on these results, we proposed a method to estimate the direction of shooting in criminal cases in which a bullet was fired on an automobile windshield.
2 0 0 0 OA 韓国のGIS事情
- 著者
- 全 炳徳 杉山 和一 石松 隆和 楊 寅台 金 應南 金 錬俊
- 出版者
- 一般社団法人 日本写真測量学会
- 雑誌
- 写真測量とリモートセンシング (ISSN:02855844)
- 巻号頁・発行日
- vol.39, no.1, pp.59-62, 2000-03-04 (Released:2010-03-19)
- 参考文献数
- 5
1 0 0 0 OA 自動車フロントガラスの損傷に基づく発射弾丸入射角の実験的推定
- 著者
- 平川 俊介 案部 雄一郎 山下 珠希 内野 隆一郎 丸田 英基 才本 明秀 石松 隆和
- 出版者
- 日本法科学技術学会
- 雑誌
- 日本法科学技術学会誌 (ISSN:18801323)
- 巻号頁・発行日
- pp.687, (Released:2015-05-08)
- 参考文献数
- 15
Handgun bullets fired toward the windshield of an automobile sometimes ricochets. In such a case, we must estimate the type of bullet and direction of shooting from the damaged windshield. The purpose of this study is to obtain a method to estimate the fired direction of a handgun bullet from the fractured windshield. We test fired bullets to an automobile windshield with various incidence angles. The thickness of the windshield is slightly different from model to model of the automobiles. In the beginning, we examined the strength of the automobile windshield of various car models. First, we examined the static failure strength of the windshield by an indentation test. In this test, fracture load and the amount of indentation were measured on windshield samples cut from ten models of Japanese automobiles. Next, we test fired a handgun in order to examine the relation between the trajectory of a bullet and the collision marks on the windshield. The cartridges used in these test firings were 38SPL. lead round nose (LRN) bullet and full metal cased (FMC) bullet. In the results of static indentation test for different car models, there was found to be almost no differences in the relationship between fracture load and indentation depth. With the LRN bullet, bullets perforated the windshield when the incidence angle was less than 45 degrees and ricocheted when the incidence angle was greater than 60 degrees. In these cases, a characteristic damage was left on the windshield. On the other hand, FMC bullets of 38SPL. perforated the windshield when the incidence angle was less than 60 degrees and ricocheted when the incidence angle was greater than 70 degrees. Based on these results, we proposed a method to estimate the direction of shooting in criminal cases in which a bullet was fired on an automobile windshield.
1 0 0 0 階段や坂を歩ける大腿義足膝継手 NAL-Knee の開発
- 著者
- 二宮 誠 増田 勝也 鈴木 光久 後藤 学 石松 隆和
- 出版者
- 日本義肢装具学会
- 雑誌
- 日本義肢装具学会誌 = Bulletin of the Japanese Society of Prosthetic and Orthotic Education, Research and Development (ISSN:09104720)
- 巻号頁・発行日
- vol.24, no.4, pp.228-236, 2008-10-01
- 参考文献数
- 4
膝の機能を持たない大腿切断者が, 大腿義足で交互歩行による坂や階段のスムーズな昇降を行うためには, 膝継手に設けた油圧シリンダーを制御する必要がある. つまり, 階段の上りでは膝が任意の角度で屈曲ストップし, 階段の下りでは膝のイールディングが行われなければならない. 今回我々は, その必要な制御機能を持つ膝継手を開発した. 最初は2個のソケット内センサーによる随意制御を考えたが, 最終的には足部の接地状況を, 膝下のリンク機構によりシリンダーに伝えるバウンサー機構を考案した. この膝継手NAL-Knee により, バッテリー等も必要なく, 平地の自由な速度での歩行や, 坂, 階段の交互昇降が可能となった.
1 0 0 0 自動車フロントガラスの損傷に基づく発射弾丸入射角の実験的推定
- 著者
- 平川 俊介 案部 雄一郎 山下 珠希 内野 隆一郎 丸田 英基 才本 明秀 石松 隆和
- 出版者
- Japanese Association of Forensic Science and Technology
- 雑誌
- 日本法科学技術学会誌 (ISSN:18801323)
- 巻号頁・発行日
- 2015
Handgun bullets fired toward the windshield of an automobile sometimes ricochets. In such a case, we must estimate the type of bullet and direction of shooting from the damaged windshield. The purpose of this study is to obtain a method to estimate the fired direction of a handgun bullet from the fractured windshield. We test fired bullets to an automobile windshield with various incidence angles. The thickness of the windshield is slightly different from model to model of the automobiles. In the beginning, we examined the strength of the automobile windshield of various car models. First, we examined the static failure strength of the windshield by an indentation test. In this test, fracture load and the amount of indentation were measured on windshield samples cut from ten models of Japanese automobiles. Next, we test fired a handgun in order to examine the relation between the trajectory of a bullet and the collision marks on the windshield. The cartridges used in these test firings were 38SPL. lead round nose (LRN) bullet and full metal cased (FMC) bullet. In the results of static indentation test for different car models, there was found to be almost no differences in the relationship between fracture load and indentation depth. With the LRN bullet, bullets perforated the windshield when the incidence angle was less than 45 degrees and ricocheted when the incidence angle was greater than 60 degrees. In these cases, a characteristic damage was left on the windshield. On the other hand, FMC bullets of 38SPL. perforated the windshield when the incidence angle was less than 60 degrees and ricocheted when the incidence angle was greater than 70 degrees. Based on these results, we proposed a method to estimate the direction of shooting in criminal cases in which a bullet was fired on an automobile windshield.<br>