BOLT AXIAL FORCE TEST APPARATUS AND BOLT AXIAL FORCE TEST METHOD

PROBLEM TO BE SOLVED: To provide a bolt axial force test apparatus and a bolt axial force test method.SOLUTION: A bolt axial force test apparatus 1 for acquiring the relation between a fastening torque T and an axial force of a bolt 2, comprises: fastening torque detection means 3 detecting the fastening torque T of the bolt 2; load detection means 5 arranged between base materials 4a and 4b that are fastened by the bolt 2 and detecting a compressive load, the load detection means 5 including a hollow cylinder 51 into which the bolt 2 is fitted with a play and a strain gauge 7 disposed circumferentially on an outer circumferential surface of the hollow cylinder 51; and correlation calculation means 6 outputting a relation between the fastening torque T detected by the fastening torque detection means 3 and the load (axial force F) detected by the load detection means 5. 【課題】ボルト軸力試験装置およびボルト軸力試験方法を提供する。【解決手段】ボルト２の締付トルクＴと軸力の関係を取得するボルト軸力試験装置１であって、ボルト２の締付トルクＴを検出する締付トルク検出手段３と、ボルト２で締結される母材４ａ、４ｂ間に配置され、圧縮荷重を検出する荷重検出手段５と、を具備し、荷重検出手段５は、ボルト２を遊嵌する中空円筒５１と、中空円筒の外周面に周方向に配設されたひずみゲージ７と、を有し、締付トルク検出手段３によって検出した締付トルクＴと荷重検出手段５によって検出した荷重（軸力Ｆ）との関係を出力する相関関係算出手段６と、を備えた。【選択図】図２