Patent ID: 8402839

Claim:
A jig for a compression test in a heating furnace used in a force application test of a test sample, which comprises: an upper plate ( 110 ) having an upper surface in which concave fixing grooves ( 112 ) are formed in edges thereof, and a lower surface in which a hemispherical projection ( 120 ) is formed at a center thereof; a lower plate ( 130 ) correspondingly disposed under the upper plate ( 110 ), and having a lower surface in which fixing grooves ( 132 ) are formed in edges thereof to correspond to the fixing grooves ( 112 ) of the upper surface of the upper plate ( 110 ) and an upper surface in which a hemispherical concave part ( 140 ) is formed to correspond to the hemispherical projection ( 120 ) of the upper plate ( 110 ) so that the upper plate ( 110 ) is seated thereon; and holders ( 150 ) each having an upper flange ( 152 ) inserted into the fixing groove ( 112 ) of the upper surface of the upper plate ( 110 ), a lower flange ( 154 ) inserted into the fixing groove ( 132 ) of the lower surface of the lower plate ( 130 ), and a middle flange ( 156 ) inserted into a gap between the upper plate ( 110 ) and the lower plate ( 130 ), which project from one surface thereof, to prevent rotation or movement of the upper and lower plates ( 110 ) and ( 130 ), wherein a hinge condition and an end fixing condition of a test sample (S) are implemented through attachment and detachment of the holders ( 150 ).