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Non-Destructive Testing (NDT) is critical for industrial safety, yet traditional methods face limitations regarding coupling requirements and complex materials. This work presents a systematic review of photoacoustic technology as an advanced alternative, combining optical penetration with ultrasonic advantages to enable non-contact, high-resolution inspections. The study analyzes its successful application across metals, batteries and semiconductors for multiscale defect detection. Results confirm that photoacoustics is a consolidated tool that promises to evolve from simple defect detection to predictive lifespan analysis in advanced manufacturing. This review was conducted through a structured bibliographic search in Scopus, Web of Science, and IEEE Xplore, covering English-language publications from 2020 onward, with selection criteria focused on photoacoustic techniques applied specifically to engineering and industrial NDT/E, excluding biomedical in vivo studies
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Derramadero-Domínguez et al. (2026) studied this question.
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