Abstract:
To provide a fracture-visualization sensor capable of visualizing the fracture behavior of a composite material and a composite-material fracture-visualization system using the fracture-visualization sensor. A first luminescent film including a mechanoluminescent material is provided on one surface of a composite material. The first luminescent film has a maximum stress per unit of cross-sectional area within the range of 19-43 N/mm2.
Abstract:
Provided is a mechanoluminescent material which can radiate near-infrared light. The mechanoluminescent material includes an aluminate co-doped with Eu2+, Cr3+, and an ion or ion cluster of at least any one rare earth metal element selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu. In addition, in the mechanoluminescent material, the aluminate is an aluminate represented by Formula MAl2O4 (provided that, M is any of Mg, Ca, Sr, or Ba) and Eu2+, Cr3+, and the ion or ion cluster of a rare earth metal element are co-doped at a concentration at which M in the aluminate is substituted by from 0.25 to 10%.
Abstract:
An object is to provide a joining state detection film, a joining state detection device, and a joining state detection method, capable of detecting a joining state of a joining portion of two members from the outside. [Solution] A film containing a mechanoluminescent substance is formed on a surface, on a side opposite to a joining surface, of at least one member of two members that are joined at joining parts each having the joining surface, and physical stimulation is applied thereto.
Abstract:
[Problem]To provide a charged particle detection material which can detect charged particles due to a discharge phenomenon or the like caused even in a very low voltage which cannot be observed by a prior art, as well as a charged particle detection film and a charged particle detection liquid using the material.[Solution]The charged particle detection material and the charged particle detection film according to the present invention contain at least one of a fluorescent substance, a luminescent substance, an electroluminescent substance, a fractoluminescent substance, a photochromic substance, an afterglow substance, a photostimulated luminescent substance and a mechanoluminescent substance and can easily detect emission or incidence of charged particles in real time.