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Pedram O, Jamali R, Abbasian V, Rad VF, Darafsheh A, Khamedi R, Poursaeidi E, Moradi AR. Evaluation of pitting corrosion by dynamic speckle pattern analysis. Sci Rep 2023; 13:8549. [PMID: 37236999 DOI: 10.1038/s41598-023-35559-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 05/20/2023] [Indexed: 05/28/2023] Open
Abstract
There is an increasing interest in non-destructive and real-time high-resolution approaches for corrosion studies in metals. In this paper, we propose the dynamic speckle pattern method as a low-cost, easy-to-implement, and quasi in-situ optical technique for the quantitative evaluation of pitting corrosion. This type of corrosion occurs in a specific area of a metallic structure and causes holes formation leading to structural failure. A Custom 450 stainless steel sample, placed in 3.5 wt% NaCl solution and applied to a [Formula: see text] potential to initiate the corrosion, is used as the sample. The speckle patterns formed by the scattering of a He-Ne laser light is changed over time due to any corrosion in the sample. The analysis of the time-integrate speckle pattern suggests that the growth rate of pitting decreases with time.
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Affiliation(s)
- Omid Pedram
- Department of Mechanical Engineering, University of Zanjan, Zanjan, 45371-38791, Iran
| | - Ramin Jamali
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
| | - Vahid Abbasian
- Imaging Science Program, McKelvey School of Engineering, Washington University in St. Louis, St. Louis, MO, 63130, USA
- Department of Radiation Oncology, Washington University School of Medicine in St. Louis, St. Louis, MO, 63110, USA
| | - Vahideh Farzam Rad
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran.
| | - Arash Darafsheh
- Department of Radiation Oncology, Washington University School of Medicine in St. Louis, St. Louis, MO, 63110, USA
| | - Ramin Khamedi
- Department of Mechanical Engineering, University of Zanjan, Zanjan, 45371-38791, Iran
- Department of Mechanical Engineering, School of Engineering & Applied Science, Khazar University, Baku, AZ1096, Azerbaijan
| | - Esmaeil Poursaeidi
- Department of Mechanical Engineering, University of Zanjan, Zanjan, 45371-38791, Iran
| | - Ali-Reza Moradi
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
- School of Nano Science, Institute for Research in Fundamental Sciences (IPM), Tehran, 19395-5531, Iran
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Steinbock C, Katzav E. Dynamics of fluctuating thin sheets under random forcing. Phys Rev E 2023; 107:025002. [PMID: 36932563 DOI: 10.1103/physreve.107.025002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 01/11/2023] [Indexed: 06/18/2023]
Abstract
We study the dynamic structure factor of fluctuating elastic thin sheets subject to conservative (athermal) random forcing. In Steinbock et al. [Phys. Rev. Res. 4, 033096 (2022)2643-156410.1103/PhysRevResearch.4.033096] the static structure factor of such a sheet was studied. In this paper we recap the model developed there and investigate its dynamic properties. Using the self-consistent expansion, the time-dependent two-point function of the height profile is determined and found to decay exponentially in time. Despite strong nonlinear coupling, the decay rate of the dynamic structure factor is found to coincide with the effective coupling constant for the static properties, which suggests that the model under investigation exhibits certain quasilinear behavior. Confirmation of these results by numerical simulations is also presented.
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Affiliation(s)
- Chanania Steinbock
- Racah Institute of Physics, The Hebrew University, Jerusalem 9190401, Israel
| | - Eytan Katzav
- Racah Institute of Physics, The Hebrew University, Jerusalem 9190401, Israel
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Ge Z, Meng N, Song L, Lam EY. Dynamic laser speckle analysis using the event sensor. APPLIED OPTICS 2021; 60:172-178. [PMID: 33362087 DOI: 10.1364/ao.412601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 12/02/2020] [Indexed: 06/12/2023]
Abstract
Dynamic laser speckle analysis (DLSA) can obtain useful information about the scene dynamics. Traditional implementations use intensity-based imaging sensors such as a complementary metal oxide semiconductor and charge-coupled device to capture time-varying intensity frames. We use an event sensor that measures pixel-wise asynchronous brightness changes to record speckle pattern sequences. Our approach takes advantage of the low latency and high contrast sensitivity of the event sensor to implement DLSA with high temporal resolution. We also propose two evaluation metrics designed especially for event data. Comparison experiments are conducted in identical conditions to demonstrate the feasibility of our proposed approach.
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Farzam Rad V, Panahi M, Jamali R, Darudi A, Moradi AR. Non-invasive in situ monitoring of bone scaffold activity by speckle pattern analysis. BIOMEDICAL OPTICS EXPRESS 2020; 11:6324-6336. [PMID: 33282493 PMCID: PMC7687950 DOI: 10.1364/boe.401740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 10/05/2020] [Accepted: 10/06/2020] [Indexed: 06/01/2023]
Abstract
Scaffold-based bone tissue engineering aims to develop 3D scaffolds that mimic the extracellular matrix to regenerate bone defects and damages. In this paper, we provide a laser speckle analysis to characterize the highly porous scaffold. The experimental procedure includes in situ acquisition of speckle patterns of the bone scaffold at different times under preserved environmental conditions, and follow-up statistical post-processing toward examining its internal activity. The activity and overall viscoelastic properties of scaffolds are expressed via several statistical parameters, and the variations in the computed parameters are attributed to time-varying activity of the samples during their internal substructure migration.
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Affiliation(s)
- Vahideh Farzam Rad
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Majid Panahi
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran
| | - Ramin Jamali
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Ahmad Darudi
- Department of Physics, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran
| | - Ali-Reza Moradi
- Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
- School of Nano Science, Institute for Research in Fundamental Sciences (IPM), Tehran 19395-5531, Iran
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Rizwan M, Ganjkhani Y, Farzam Rad V, Bazzar M, Yar M, Yahya R, Moradi A. Surface characterizations of membranes and electrospun chitosan derivatives by optical speckle analysis. SURF INTERFACE ANAL 2019. [DOI: 10.1002/sia.6731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Muhammad Rizwan
- Department of ChemistryUniversiti Malaya Kuala Lumpur Malaysia
- Department of ChemistryThe University of Lahore Lahore Pakistan
| | - Yasaman Ganjkhani
- Department of PhysicsInstitute for Advanced Studies in Basic Sciences (IASBS) Zanjan Iran
| | - Vahideh Farzam Rad
- Department of PhysicsInstitute for Advanced Studies in Basic Sciences (IASBS) Zanjan Iran
| | - Maasoomeh Bazzar
- School of ChemistryUniversity of East Anglia, Norwich Research Park Norwich UK
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical MaterialsCOMSATS University Lahore Pakistan
| | - Rosiyah Yahya
- Department of ChemistryUniversiti Malaya Kuala Lumpur Malaysia
| | - Ali‐Reza Moradi
- Department of PhysicsInstitute for Advanced Studies in Basic Sciences (IASBS) Zanjan Iran
- School of Nano ScienceInstitute for Research in Fundamental Sciences (IPM) Tehran Iran
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