Material uniformity usually refers to whether the density distribution of the entire material is uniform and whether there are significant differences in the physical properties of different parts. If the material uniformity is poor, it may lead to excessive pressure in certain areas, resulting in damage or strain. For example, in the production of plastic products, the presence of suspended particles or other impurities in the plastic can lead to issues such as an uneven surface, fragility, or insufficient strength after molding. Near-infrared short-wave cameras can easily detect these problems by observing the uniformity of the internal structure of the material, identifying and preventing these issues in advance.
Bubbles often appear in non-metallic materials, especially during the production process. Factors such as moisture, chemical reactions, or vibrations can cause the accumulation of air or gas, leading to the formation of bubbles. Bubbles typically result in reduced overall strength, an uneven appearance, and a shortened lifespan of the material. Therefore, timely detection and treatment of bubbles are crucial in the manufacturing process. Through the technology of near-infrared short-wave cameras, the position and quantity of bubbles in the material can be accurately detected.
As a non-contact non-destructive testing technology, near-infrared short-wave cameras can visually observe the internal structure of non-metallic materials. It utilizes the interaction between near-infrared short waves and substances as they pass through non-metallic materials. Different components, densities, and gas contents in the material will exhibit different reflection and absorption phenomena with near-infrared short waves, resulting in distinct image effects.
When near-infrared short waves pass through non-metallic materials, they are influenced by the different characteristics of internal substances. If there are bubbles or poor uniformity in the non-metallic material, they will exhibit significant differences from the surrounding material, resulting in anomalies such as "white spots" or "black spots" in the image. By observing these anomalies, it is possible to determine whether there are issues within the material.
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一、脱泡原理真空脱泡：这是最常见的脱泡方式之一。其原理是基于在真空环境下，液体或胶体中的气泡内部压力高于外部环境压力。当压力差足够大时，气泡会膨胀并破裂，气体分子从材料中逸出。例如，在真空脱泡机中，将含有气泡的材料（如胶水）放入密封腔室，然后抽气使腔室内达到一定的真空度，随着气泡的膨胀和破裂，脱泡过
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