Effect of Low Temperature on Electromagnetic Radiation from Soft PZT SP-5A Under Impact Loading

Sharma, Sumeet K.; Sivarathri, Ashok Kumar; Chauhan, Vishal Singh; Sinapius, Michael

doi:10.1007/s11664-018-6464-6

Cited by 6 publications

(5 citation statements)

References 64 publications

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“…In case of EMR detection at low temperatures the restricted domain wall movement leading to less displacement of charges and consequent less dipole oscillation has been considered responsible for low amplitude of EMR signals. Restricted domain wall movement is in line with increase in Young's modulus at lower temperatures which has been obtained experimentally [85].…”

Section: Ionic Crystals/materialssupporting

confidence: 74%

“…6). The lowest temperature attained in the experiments was 203 K. EMR signal is found to decrease with the decrease in temperature, whereas the Young's modulus shows an increasing pattern [85]. Signal shape obtained from PZT in case of impact loading is shown in Fig.…”

Section: Ceramicsmentioning

confidence: 85%

“…Schematic diagram of experimental setup used for EMR detection from ferroelectrics when subjected to impact loading (used with permission from Springer)[85].…”

mentioning

confidence: 99%

“…EMR signals obtained from soft PZT during face reversal when subjected to impact loading (used with permission from Springer)[85].…”

mentioning

confidence: 99%

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A review on deformation-induced electromagnetic radiation detection: history and current status of the technique

2020

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Development of the deformation monitoring techniques for the infrastructures so as to avoid catastrophic failure and resulting economic/human loss has remained a key interest of scientists and engineers. Among various deformation monitoring techniques utilized and explored by groups of researchers, electromagnetic radiation detection is one of the intriguing techniques which has remained popular in researchers’ community till today. Almost every type of material is being explored and studied by researchers for the electromagnetic emissions when subjected to external loading and/or failure. Experimental and theoretical investigations are demonstrating these emissions to be a suitable candidate for the deformation monitoring, as a failure predictor and to know about the complex phenomenon of fracture. This article presents extensive literature review and a rigorous discussion on the work done in the past several decades regarding the exploration of electromagnetic emissions from a wide variety of materials and the underlying physical mechanisms. Thus, this review is an attempt to highlight main findings, proposed physical mechanisms, prospective applications, future scope and challenges of the electromagnetic emission detection technique.

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Section: Ionic Crystals/materialssupporting

confidence: 74%

Section: Ceramicsmentioning

confidence: 85%

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A review on deformation-induced electromagnetic radiation detection: history and current status of the technique

2020

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“…These emissions are nowadays considered as potential tools for SHM purposes [25,26]. An interesting review of such sensing techniques was published relatively recently by Sharma et al [27]. A specific type of such emissions, i.e., that of weak electric currents, attracted relatively recently the attention of structural engineers.…”

Section: Sensing Techniques Based On Acoustic and Electric Emissionsmentioning

confidence: 99%

Comparative Assessment of Criticality Indices Extracted from Acoustic and Electrical Signals Detected in Marble Specimens

et al. 2022

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The quantitative determination of the current load carrying capability of already loaded structural elements and the possibility to detect proper indices that could be considered as signals for timely warning that the load carrying capacity is exhausted is the subject of this study. More specifically, it aims to explore the possibility of detecting signals that can be considered as indices warning about upcoming fracture and then to compare quantitatively such signals provided by different techniques. The novelty of the present study lies exactly in this quantitative comparison of the pre-failure signals provided by various sensing techniques and various methods of analysis of the experimental data. To achieve this target, advantage is taken of data concerning the acoustic and electrical activities produced while marble specimens are subjected to mechanical loading. The respective signals are detected and recorded by means of the acoustic emissions technique and that of the pressure stimulated currents. The signals detected by the acoustic emissions technique are analyzed in terms of three formulations, i.e., the b-value, the F-function and the parameters variance κ1, entropy S and entropy under time reversal S_ according to the natural time analysis. The signals detected by the pressure stimulated currents technique are analyzed by means of the intensity of the electric current recorded. The study indicates that all quantities considered provide promising pre-failure indicators. Furthermore, when the specimen is subjected to near-to-failure load levels, the temporal evolution of three of the quantities studied (b-value, F-function, pressure stimulated currents) is governed by a specific power law. The onset of validity of this law designates some differentiation of the damage mechanisms activated. Quantitative differences are observed between the time instants at which this power law starts dictating the evolution of the above parameters, indicating the imperative need for further investigation, despite the quite encouraging results of the present study.

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Hidden Affinities Between Electric and Acoustic Activities in Brittle Materials at Near-Fracture Load Levels

2022

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Effect of Low Temperature on Electromagnetic Radiation from Soft PZT SP-5A Under Impact Loading

Cited by 6 publications

References 64 publications

A review on deformation-induced electromagnetic radiation detection: history and current status of the technique

A review on deformation-induced electromagnetic radiation detection: history and current status of the technique

Comparative Assessment of Criticality Indices Extracted from Acoustic and Electrical Signals Detected in Marble Specimens

Hidden Affinities Between Electric and Acoustic Activities in Brittle Materials at Near-Fracture Load Levels

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