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] The object of the present invention is to provide a static electricity distribution-visualizing material, a static electricity-visualizing film, a static electricity distribution-visualizing device, and a static electricity distribution-visualizing method, which can visualize a charged state to be seen with naked eyes so as to intuitively understand a static electricity distribution. [Solution] A static electricity distribution-visualizing material is manufactured so as to 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.

Abstract: [Object] An electric conductivity-measuring material which emits light according to electric conductivity of a measurement object; an electric conductivity-measuring film containing the material; and an electric conductivity-measuring device and an electric conductivity-measuring method using the electric conductivity-measuring film are provided. An electric resistivity-measuring material which emits light according to electric resistivity of a measurement object when electrons are made incident; an electric resistivity-measuring film containing the material; and an electric resistivity-measuring device and an electric resistivity-measuring method using the electric resistivity-measuring film are also provided.

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: 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: 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: 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. The charged particle detection material and the charged particle detection film 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.

Abstract: [Object] An electric conductivity-measuring material which emits light according to electric conductivity of a measurement object; an electric conductivity-measuring film containing the material; and an electric conductivity-measuring device and an electric conductivity-measuring method using the electric conductivity-measuring film are provided. An electric resistivity-measuring material which emits light according to electric resistivity of a measurement object when electrons are made incident; an electric resistivity-measuring film containing the material; and an electric resistivity-measuring device and an electric resistivity-measuring method using the electric resistivity-measuring film are also provided.

Abstract: [Problem] The object of the present invention is to provide a static electricity distribution-visualizing material, a static electricity-visualizing film, a static electricity distribution-visualizing device, and a static electricity distribution-visualizing method, which can visualize a charged state to be seen with naked eyes so as to intuitively understand a static electricity distribution. [Solution] A static electricity distribution-visualizing material is manufactured so as to 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.

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.

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: A stress history recording system for recording a stress history, which includes a light emitting section including a stress-stimulated luminescent material that emits light in response to a mechanical external force, and a recording section for recording a history of a photoreaction generated due to light emission from the light emitting section. This achieves a technology for recording a stress history by using the stress-stimulated luminescent material.

Abstract: In one embodiment of the present invention, on the surface of a material to be measured for stress analysis which has a stress-induced luminescent material layer formed thereon, a distortion energy is disclosed which is transmitted from a base material of a stress-induced luminescent material to the stress-induced luminescent material with high efficiency. The material to be measured for stress analysis has, on the surface thereof, a coating film layer, which emits light upon exposure to a change in distortion energy. The coating film layer is formed of a synthetic resin layer containing stress-induced luminescent particles, and the modulus of elasticity of a base material is not less than 1.0 GPa. The thickness of the coating film layer is preferably 1 ?m to 500 ?m.

Abstract: Provided is a stress history recording system for recording a stress history, which includes a light emitting means including a stress-stimulated luminescent material that emits light in response to a mechanical external force, and a recording means for recording a history of a photoreaction generated due to light emission from the light emitting means. This achieves a technology for recording a stress history by using the stress-stimulated luminescent material.