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本研究では，強風による飛散物に対する外装材の耐衝撃性能の試験・評価方法を策定する資料とするため，日本における代表的な飛散物である和瓦を加撃体として用いた試験を行い，ISO 16932に規定された評価方法に準じて合わせガラスの耐衝撃破壊特性を明らかにした。さらに，瓦の衝撃力を不貫通速度の大きさとして評価するとともに，ISO 16932に規定された加撃体に対して瓦の衝撃力と等価な衝突速度を求め，瓦の衝撃力を評価できるようにISO規格と整合性のとれた標準加撃体を提案した。, Impact resistant test of glazing was carried out by using a newly developed air-cannon, that is a missile-propulsion device. Resistant and failure characteristics of laminated glass were investigated by roof tile missile. A series of tests was carried out by varying the impact speed, the kind of roof tile, the impact location of roof tile and the location of the glass where impacted. The results were compared with the specification of ISO16932 and the reference missile for the standard impact test in Japan was proposed.

本研究では, ISO規格(ISO 16932)に規定された建物開口部におけるガラスの耐衝撃破壊性能評価方法に従って衝撃試験を行うことのできる試験装置を作成し, 種々の板ガラスを試験体として用いた衝撃試験を行い, 耐衝撃破壊性能を明らかにした。得られた結果をまとめると, 今回試験体として用いた普通フロートガラス(厚さ5, 6, 8, 10, 12mm), 強化ガラス(厚さ5, 6, 8, 10mm), 網入りガラス(厚さ6.8, 10mm)は, ISO規格に従う判定に不合格であった。合わせガラス(中間膜の厚さ30, 60, 90milの３種類とガラス厚さ3, 5mmの２種類の組み合わせ)ではISO規格に従う加撃体Ａ, Ｂ, Ｃによる, フィルム貼りガラス(フィルム厚さ50, 100, 350, 450μmの４種類とガラス厚さ5, 6mmの2種類の組み合わせ)では加撃体Ａ, Ｂによる衝撃試験に合格した。, Impact resistant test of glazing was carried out based on ISO 16932. An air-cannon, that is a missile-propulsion device, for the impact resistant test of cladding against windborne debris was manufactured. A series of tests of various kinds of glasses was carried out to investigate the performance of impact resistant and the characteristics of failure. The performance of sheet glasses, such as float, tempered, wired, laminated and filmed glasses was evaluated by the specification of ISO16932.

本研究では，日本における建築物外装材の耐衝撃性能の標準仕様や試験方法の策定に資するため，高速で飛来する飛散物を模擬する加撃体を射出し，外装材の耐衝撃試験を行うためのエアーキャノンを作製した．エアーキャノンの設計にあたっては，アメリカ合衆国やISO基準に準ずる耐衝撃性能試験を行えるようにした．本報告では，外装材の耐衝撃性能を評価する既存の試験・評価方法を概説するとともに，作製した装置の性能試験結果について述べる, We manufactured an air-cannon, that is a missile-propulsion device, for the impact resistant test of cladding against windborne debris. The air-cannon consists of a compressed-air supply, pressure control and release valves, a barrel, a support frame and a speed-measuring system. Sets of photoelectric sensors mounted on the barrel are used for measuring the speed of the missile. The cannon is capable of propelling a missile at a specified speed and orientation towards a specified impact location. We calibrated the speed measuring system by a high-speed video camera. The fastest speed was 75m/s for a 3kg lumber. Tolerances for the measured impact speed were satisfied the specification of ISO16932.

Impact resistant test of glazing was carried out by using a newly developed air-cannon, that is a missile-propulsion device. Resistant and failure characteristics of laminated glass were investigated by roof tile missile. A series of tests was carried out by varying the impact speed, the kind of roof tile, the impact location of roof tile and the location of the glass where impacted. The results were compared with the specification of ISO16932 and the reference missile for the standard impact test in Japan was proposed.

Impact resistant test of glazing was carried out based on ISO 16932. An air-cannon, that is a missile-propulsion device, for the impact resistant test of cladding against windborne debris was manufactured. A series of tests of various kinds of glasses was carried out to investigate the performance of impact resistant and the characteristics of failure. The performance of sheet glasses, such as float, tempered, wired, laminated and filmed glasses was evaluated by the specification of ISO16932.

We manufactured an air-cannon, that is a missile-propulsion device, for the impact resistant test of cladding against windborne debris. The air-cannon consists of a compressed-air supply, pressure control and release valves, a barrel, a support frame and a speed-measuring system. Sets of photoelectric sensors mounted on the barrel are used for measuring the speed of the missile. The cannon is capable of propelling a missile at a specified speed and orientation towards a specified impact location. We calibrated the speed measuring system by a high-speed video camera. The fastest speed was 75m/s for a 3kg lumber. Tolerances for the measured impact speed were satisfied the specification of ISO16932.