Optimization of the phase demodulation algorithms for investigating the optical properties of the polymer fibre during mechanical deformations interferometrically

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical and Quantum Electronics Pub Date : 2025-01-11 DOI:10.1007/s11082-024-07969-1

N. H. El-Omda, T. Z. N. Sokkar, M. A. El-Bakary, A. M. Ali, E. Z. Omar

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Abstract

The mechanical deformations in polymer fibres play an essential role for understanding the mechanism of fracture in this material. These deformations were examined interferometrically. The optical phase map of the deformed fibres has the key information about their structural features. So, the main core of this paper is to find an optimal algorithm for analyzing the interference fringe patterns of deformed fibres and demodulating their phase maps. For performing this task, two beam interference patterns for crazed and fractured polypropylene (PP) fibres were captured using the non-duplicated Pluta interference microscope. The phase map for each deformation demodulated using the spatial carrier frequency, the one- dimensional continuous wavelet transform (1D CWT) and the phase shifting fringe pattern analysis algorithms. The performance of each algorithm for finding the optimal phase map was evaluated using the contour line method. A refined method for calculating the areal craze density of a crazed pattern is presented. Based on the optimal extracted phase values of PP fibre for each type of deformation, the 3D birefringence values were calculated.

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基于相位解调算法的干涉法研究聚合物纤维在机械变形过程中的光学特性

聚合物纤维的力学变形对理解这种材料的断裂机理起着至关重要的作用。这些变形用干涉测量法进行了检测。变形纤维的光学相位图包含了其结构特征的关键信息。因此，本文的核心是寻找一种最优算法来分析变形光纤的干涉条纹图并解调其相位图。为了完成这项任务，使用非重复的普罗塔干涉显微镜捕获了疯狂和断裂聚丙烯（PP）纤维的两束干涉图样。利用空间载波频率、一维连续小波变换（1D CWT）和相移条纹图分析算法对各形变的相位图进行解调。采用等高线法对各算法寻找最优相位图的性能进行了评价。提出了一种计算疯狂图案面裂纹密度的改进方法。基于提取出的PP纤维在不同变形类型下的最佳相位值，计算出三维双折射值。

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来源期刊

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.