Optical profilometer using laser based conical triangulation for inspection of inner geometry of corroded pipes in cylindrical coordinates

Buschinelli, Pedro; Melo, João Ricardo C.; Albertazzi, Armando; Santos, João M. C.; Camerini, Cláudio

doi:10.1117/12.2020966

Cited by 6 publications

(2 citation statements)

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“…Recordings of these visual inspections are also available to ease corrosion monitoring. 22 The use of charge coupled devices (CCD) coupled with diffracto D-sight, 23 edge of light, 24 3D-optical profilometry, 25 Moire interferometry 26 and video imaging has been used recently to record the visual inspection. These recorded images can then be evaluated for surface defects, cracks or pitting.…”

Section: Corrosion Monitoring and Detectionmentioning

confidence: 99%

Non-destructive techniques for corrosion detection: A review

Vasagar,

Hassan,

Abdullah

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

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Corrosion detection (CD) has become a high priority in chemical industries, defense and transportation sectors to extend the life of existing or new systems while ensuring the safety of the existing components and reducing downtime to minimise economic losses. Here, this article is aimed to review and discuss non-destructive techniques used widely in the industry to detect, monitor and repair corrosion problems early on. The comprehensive review provides a detailed discussion, a functional mechanism, advantages and disadvantages of crucial non-destructive CD techniques widely used in the industry, helping the reader choose the type of corrosion monitoring methods effectively. An extensive literature review of visual and optical testing techniques, acoustic emissions, eddy current, guided wave and equipment, infrared thermography, radiographic, microwave and millimeter wave, and terahertz imaging is discussed. The underlying mechanism, its merits and limitations, along with the usage scenario, is explained that can be related across different areas making it interdisciplinary research for corrosion monitoring techniques.

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Section: Corrosion Monitoring and Detectionmentioning

confidence: 99%

Non-destructive techniques for corrosion detection: A review

Vasagar,

Hassan,

Abdullah

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

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“…This method requires strict parallel between the main axis of the measurement system and the axis of the ring gauge, which is difficult to implement. Buschinelli et al [21,22] calibrated their system to measure an inner stepped cylindrical gauge with 28 different diameter regions to obtain a polynomial relation between the pixel radius of ring light stripes and the real radius. The inner surface is calculated according to this relation.…”

Section: Introductionmentioning

confidence: 99%

The calibration method of the circle-structured light measurement system for inner surfaces considering systematic errors

Dong

Fang

Zhu

et al. 2021

Meas. Sci. Technol.

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Light plane deviation and motion direction deviation of stage systems are the two main sources of systematic errors in circle-structured light inner surface measurement systems. In this paper, we propose a new two-step calibration method to compensate these systematic errors. In the first step, a more accurate initial light plane calibration result is obtained by multi-position binocular-structured light calibration. Then, in the second step, the initial result is optimized by measuring the inner radius of a standard ring gauge to obtain the optimal light plane calibration result. Based on this result, the real motion direction is also calibrated by optimization using the inner surface scanning measurement data of the standard ring gauge. The proposed method improves the system calibration accuracy through the second calibration step, making it convenient to operate without using complex calibration targets or expensive equipment. Therefore, this calibration method has the potential to be used in actual measurements. The experimental results show that the mean relative measurement error can reach 0.015% in our homemade measurement system and validate that the measurement system calibrated by our proposed method realizes high-precision and high-repeatability measurements for inner surfaces.

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