Mechanical analysis of square shaped PMMA using reflection photoelasticity

Manjit, Yongyut; Limpichaipanit, Apichart; Ngamjarurojana, Athipong

doi:10.1016/j.ijleo.2021.166943

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…It has been known that after pressurization, the internal stress and strain changed with the magnitude of the load and the time [ 33 ]. From Figure 3 b, the inhomogeneity of the t 1 images becomes more obvious with higher pressure, indicating an increase in both stress and strain of the sample [ 34 , 35 ]. Over time, a similar tendency can also be observed; and in detail, it seems that the edges dynamically shift as time increases, which makes the distribution becomes richer of textures.…”

Section: Resultsmentioning

confidence: 99%

Creep Monitoring of Submersible Observation Windows Using Mueller Matrix Imaging

Zhang

et al. 2023

Materials

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Safety of the observation window is one of the core concerns for manned submersibles. When subjected to underwater static pressure, extrusion and creep deformation always occur in the observation window, which can pose a threat to both safety and optical performance. To assess the deformation, real-time and non-contact monitoring methods are necessary. In this study, a conceptual setup based on the waveplate rotation and dual-DoFP (division of focal-plane polarimeter) polarization camera is built for the observation window’s creep monitoring by measuring the Mueller matrix images of the samples under different pressures and durations. Then, a series of characteristic parameters, such as t1, R, r, R′, are extracted from the Muller matrix images by Mueller matrix transformation (MMT), Mueller matrix polar decomposition (MMPD), correlation analysis and phase unwrapping method. The results demonstrate that these parameters can effectively describe the observation window’s creep at different pressure levels which are simulated by finite element analysis. Additionally, more characterization parameters, such as ψ, A and D, are given from the Mueller matrix images and discussed to illustrate the method’s potential for further applications and investigations. Ultimately, future devices based on this method could serve as a valuable tool for real-time and non-contact creep monitoring of the submersible observation windows.

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Section: Resultsmentioning

confidence: 99%

Creep Monitoring of Submersible Observation Windows Using Mueller Matrix Imaging

Zhang

et al. 2023

Materials

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“…[8] Polymer materials have the advantages of light weight, low cost, strong impact resistance, and easy processing, and have been studied and applied in the fields of photomechanics, acceleration, and hydrophone sensors. [9][10][11][12] However, their unstable chemical and physical properties, such as low optical threshold, relatively low optical-mechanical strength, low melting temperature, and strong absorption in the infrared range, limit the application of these materials. [13][14] Single crystal materials, such as SiO 2 , LiNbO 3 , TeO 2 , and PbMoO 4 , circumvent most of the limitations encountered by the aforementioned materials and are preferred for the design and application of elasto-optic devices.…”

Section: Introductionmentioning

confidence: 99%

Elasto‐Optic Effect of Lanthanum‐Modified Lead Zirconate–Lead Titanate Transparent Ceramics: Application in Optical‐Stress Sensors

Ming

Liu

Chen

et al. 2022

Advanced Optical Materials

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Elasto‐optic materials have extensive applications, particularly in sensors, filters, and acousto‐optic modulators in optical–mechanical‐coupled devices. Ferroelectric phenomenological theoretical analyses have shown that materials with large ferroelastic responses also have high elasto‐optic effects, and morphotropic phase‐boundary (MPB) ferroelectrics have substantial ferroelastic coupling; thus, a large elasto‐optic effect can be obtained. In this study, guided by phenomenological theories, lanthanum‐modified lead zirconate–lead titanate (PLZT) transparent ceramics close to MPB are successfully prepared using the hot‐pressing method. The elasto‐optic properties of the PLZT transparent ceramics are investigated using the half‐wave stress and the Sénarmont compensator methods. The results indicate that the PLZT ceramics have high transmittance (higher than 70% in near‐infrared) and a large elasto‐optic effect with a stress‐optic coefficient of 10.41 × 10−12 m2 N−1 (approximately three times that of SiO2). Based on these properties, intensity‐ and interference‐type optical‐stress sensors are designed and realized; better anti‐interference ability can be achieved using the interference‐type sensor. These results indicate that PLZT transparent ceramics are promising candidates for optical–mechanical‐coupled device applications. This study also substantiates that transparent ceramics are novel elasto‐optic materials, which uncover new avenues for the development of elasto‐optic materials with excellent properties.

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Full-field stress-strain analysis of octagonal shape PMMA using reflection photoelasticity

Manjit,

Um-In,

Limpichaipanit

et al. 2024

Optik

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Mechanical analysis of square shaped PMMA using reflection photoelasticity

Cited by 5 publications

References 9 publications

Creep Monitoring of Submersible Observation Windows Using Mueller Matrix Imaging

Creep Monitoring of Submersible Observation Windows Using Mueller Matrix Imaging

Elasto‐Optic Effect of Lanthanum‐Modified Lead Zirconate–Lead Titanate Transparent Ceramics: Application in Optical‐Stress Sensors

Full-field stress-strain analysis of octagonal shape PMMA using reflection photoelasticity

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