Abstract:
PROBLEM TO BE SOLVED: To provide an artificial rainfall system which is provided with a convenient structure suitable for allowing artificial rain approximate to natural rain to fall on all rainfall-requiring places where rainfall is necessary and has a satisfactory handleability. SOLUTION: A plurality of artificial rainfall devices 1 are arranged almost uniformly along a running test course 7 of a vehicle 8 as one of the rainfall-requiring places. Nozzles 5 for artificial rainfall composed of fine pipes, flexible tubes etc. are disposed on the artificial rainfall device 1. By setting the shape and dimensions of the nozzle 5 for artificial rainfall, and water amount and pressure of supplied water that is supplied to the nozzle for artificial rain fall to constant values, the artificial rain approximate to natural rain is injected from tips of the flexible tubes. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a workpiece fixing type cold heat shock testing machine having a simple structure for efficiently and certainly performing the cold heat shock of a workpiece by repeatedly performing the heating and cooling of the workpiece in the state where the workpiece is fixed in a predetermined position. SOLUTION: A workpiece 1 is fixed in a predetermined position by a workpiece fixing part 2. A heating chamber 3 and a cooling chamber 4 are alternately engaged with the workpiece 1 provided in a fixing position and the heating and cooling of the workpiece are repeatedly performed. By this constitution, a cold heat shock test is performed in the state where the workpiece is fixed in the predetermined position, and the heating chamber 3 and the cooling chamber 4 are preheated and precooled. An efficient test can be performed thereby. COPYRIGHT: (C)2007,JPO&INPIT