A stress measurement device includes a first obtaining unit obtaining thermal data including information indicating a temperature of a measuring region, a second obtaining unit obtaining data related to stress occurring in one part of the measuring region, and a controller finding stress occurring in the measuring region from the thermal data and the data related to the stress. The controller finds, first waveform data respectively on the one part and a part other than the one part based on a change with time of the thermal data, and second waveform data based on a change with time of the data related to the stress. The controller finds, disturbance data through a deduction of the second waveform data from the first waveform data on the one part, and stress data indicating stress occurring in the part through a deduction the disturbance data from the first waveform data on the part.

Methods and systems are provided for detecting mechanophore damage in a composite material where the mechanophores are embedded in a matrix of the composite material. A mechanical load is applied to the composite material. A damage precursor signal is generated as a result of the mechanical load and is detected before yield of the mechanophore embedded composite material. Detecting the damage precursor signal may include illuminating the mechanophore embedded composite material with UV light to excite the embedded mechanophores, capturing fluorescent emissions of the embedded mechanophores with a UV camera, and filtering light received at the UV camera based on an emission wavelength of the mechanophores. Alternatively, the damage precursor signal may be detected using spectra from an evanescent wave distorted by the mechanophore embedded composite material using an attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) system.

A coating analysis system and method inductively heat a component having a coating. Optionally, the component is heated while a cooling fluid flows through cooling holes extending through the component and the coating. The system and method measure rates of infrared radiation emission from the component and the coating at different locations on the component and the coating. The system and method determining bond qualities (e.g., tensile strengths of bonds) between the coating and the component at the different locations based on the rates of infrared radiation emission that are measured.

A stress distribution measurement method is a method of measuring stress distribution generated on a structural object including two support parts and a beam part provided between the support parts. The method includes: generating first image data by performing, through a first image capturing unit, image capturing of a moving object or an identification display object attached to the structural object from the moving object; calculating, based on the first image data, a movement duration in which the moving object moves between the support parts; generating, as second image data, thermal image data by performing image capturing of the surface of the beam part through a second image capturing unit; calculating a temperature change amount based on a second image data group corresponding to the movement duration; and calculating a stress change amount based on the temperature change amount to calculate stress distribution based on the stress change amount.

A gas turbine engine includes a core engine having a casing, a cowl disposed annularly around the casing such that a gap is formed between the casing and the cowl, and a thermal monitoring system having at least one camera positioned within the gap, wherein the at least one camera is configured to detect thermal radiation from at least one turbine component within the gap.

A stress measurement device includes a first obtaining unit obtaining thermal data including information indicating a temperature of a measuring region, a second obtaining unit obtaining data related to stress occurring in one part of the measuring region, and a controller finding stress occurring in the measuring region from the thermal data and the data related to the stress. The controller finds, first waveform data respectively on the one part and a part other than the one part based on a change with time of the thermal data, and second waveform data based on a change with time of the data related to the stress. The controller finds, disturbance data through a deduction of the second waveform data from the first waveform data on the one part, and stress data indicating stress occurring in the part through a deduction the disturbance data from the first waveform data on the part.

An optical system for measuring position and acceleration of the sliding bow of a pantograph, and the contact force between the sliding bow and the catenary suspension line, comprising: at least a camera installed on the ceiling of a railway vehicle and configured so that a region containing at least a portion of said sliding bow is framed; at least a laser focused on a laser sheet arranged on a substantially vertical plane and directed towards said pantograph, said laser sheet intersecting said region framed by said camera, at least a target installed integrally to said sliding bow. The system is characterized in that, in order to increase the intensity of light reflected towards the camera, said target is cylindrical, realized in material reflecting to the frequency of the light emitted by said laser and positioned with its axis parallel to the sliding bow axis, in a position where it is lighted by said laser and framed by said camera.

A sensing system where the position and intensity of a force applied is detected with high resolution and an image and video of the surrounding environment is taken. A three-dimensional scanning thereof is performed, and the surface texture of the object touched and creep is detected. A two-dimensional and three-dimensional image (hologram) may be generated and physical and/or chemical features are detected.

A coating analysis system and method inductively heat a component having a coating. Optionally, the component is heated while a cooling fluid flows through cooling holes extending through the component and the coating. The system and method measure rates of infrared radiation emission from the component and the coating at different locations on the component and the coating. The system and method determining bond qualities (e.g., tensile strengths of bonds) between the coating and the component at the different locations based on the rates of infrared radiation emission that are measured.

A stretchable strain sensor includes a light-emitting element, an optical structure, and a photo-detective element. The stretchable strain sensor is located in a path of light emitted from the light-emitting element. The optical structure is configured to have optical properties that change in response to stretching of at least a portion of the stretchable strain sensor. The photo-detective element is configured to detect light transmitted through the optical structure or reflected through the optical structure.