Systems and methods are disclosed for detecting defects during manufacturing processes for materials and products. The provided systems may utilize imaging units and computer detection algorithms to determine the presence or absence of defects in manufactured materials or products. Detection of defects in material or products by the disclosed systems may prompt intervention in the manufacturing process to correct the source of the defects.

A screen mask inspection device inspects a screen mask including a screen opening that forms a printing pattern, and includes: an inspection control device that detects solder position information of a solder paste printed on a substrate via the screen opening, and based on the solder position information, determines whether a quality of printing using the screen mask is good or bad, the solder position information being based on an amount of positional misalignment of the solder paste actually printed on the substrate relative to a predetermined reference position.

Provided is a system for detecting a poor weld in a welded portion of a battery module, the system including a battery module fixation unit fixing the battery module to be inspected, an inspection position movement unit moving the battery module fixation unit to a welding inspection position, a welding inspection unit including a frictional reaction force measurement unit inducing a slight movement of the welded portion of the battery module and measuring a frictional reaction force generated thereby and a vision inspection camera detecting an amount of change in a position of the welded portion of the battery module, and a control unit determining whether the welded portion of the battery module is poorly welded based on the frictional reaction force and the amount of position change, measured by the welding inspection unit.

A surface inspection method includes: an irradiating step of emitting oblique illumination light onto an inspection target region of steel material using two or more oblique line light sources; an imaging step of receiving each of reflected light beams of the oblique illumination light from the respective oblique line light sources, the reflected light beams being from the inspection target region, and capturing images of the inspection target region, by one or more line sensors; and a detecting step of detecting a linear surface defect at the inspection target region using the images captured at the imaging step, wherein orthographic projections of at least two oblique illumination light beams, out of the oblique illumination light from the two or more oblique line light sources, onto a surface of the steel material are orthogonal to each other on the inspection target region.

A casting method includes pouring a molten metal in a ladle into a mold, analyzing at least one of a composition and a physical property of a test piece generated based on the molten metal sampled from inside the ladle, and performing appearance inspection of a casting product taken out from the mold, wherein in the performing appearance inspection, the at least one of the composition and the physical property of the test piece obtained in the analyzing is displayed on a display.

A surface detection system and method for continuous casting billet using two-dimensional and three-dimensional combined imaging. The detection system comprises an encoder (2), a position sensing mechanism, and a mounting rack (3), sequentially provided along a running direction of a continuous casting billet (1). The mounting rack (3) is provided with a three-dimensional imaging mechanism (4) and a two-dimensional imaging mechanism (5) sequentially along the running direction of the continuous casting billet (1). The position sensing mechanism starts the encoder (2), which records position information of the continuous casting billet (1). The mounting rack (3) is further provided with a lifting device (6). The three-dimensional imaging mechanism (4) moves up and down along the lifting device (6). The mounting rack (3) is further provided with an insulation plate (7). The two-dimensional imaging mechanism (5) is located above the insulation plate (7), and the continuous casting billet (1) is located below the insulation plate (7). Two-dimensional image data information and three-dimensional image data information are integrated to effectively detect real defects on the surface of the continuous casting billet (1) and filter pseudo defects.

A method for measuring the thickness of coatings on a substrate of an aerospace component comprises illuminating a sample comprising the substrate of the aerospace component and a coating with light waves of varying wavelengths from a light source, receiving the light waves reflected by the sample at a light collector, diffracting the light waves into a plurality of component wavelengths with a grating, detecting the light intensities of the plurality of component wavelengths at a detector array, generating a reflectance spectral curve using the detected light intensities for each of the plurality of component wavelengths, calculating the thickness of the coating from the reflectance spectral curves of the component wavelengths.

A surface inspection system for foil article is disclosed. The surface inspection system comprises a box having a top long narrow opening and a bottom long narrow opening, a bridge interface, a first light source, a second light source, a first modular camera device having a first camera, and a second modular camera device having a second camera. In which, the first light source, the second light source, the first modular camera device, and the second modular camera device all accommodated in the box, and are coupled to a control box through the bridge interface. Particularly, this surface inspection system is allowed to be integrated in an automatic production line of a foil article like electro-forming aluminum foil (also called electronic aluminum foil), so as to achieve an in-line inspection of the surface morphology of the electro-forming aluminum foil.

An apparatus and a method recognizes stamped characters, detects stamped depths of characters using the same, and/or accurately recognizes characters even when an image distortion occurs at stamped portion due to different stamped depths of characters.

A spectroscopic analysis apparatus includes: a light projecting device; a light receiving device; and an output device, wherein the light receiving device includes: a separator configured to separate reflected light into s-polarized light and p-polarized light; a detector for s-polarized light configured to output an electric signal indicating an intensity of the s-polarized light; and a detector for p-polarized light configured to output an electric signal indicating an intensity of the p-polarized light; and the output device is configured to: calculate an absorbance based on a ratio between the intensities of the s-polarized light and the p-polarized light using the electric signals output from the detector for s-polarized light and the detector for p-polarized light; and calculate either or both of the composition and the composition ratio of the surface of the measurement target object using an intensity of the absorbance at any desired wavenumber.