Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics最新文献_第4页

Dielectric elastomer sensors adapted for monitoring compression load of clamped battery cells 介电弹性体传感器，适用于监测夹紧电池的压缩负荷

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2658246

Johannes Ziegler, Detlev Uhl, H. Böse

{"title":"Dielectric elastomer sensors adapted for monitoring compression load of clamped battery cells","authors":"Johannes Ziegler, Detlev Uhl, H. Böse","doi":"10.1117/12.2658246","DOIUrl":"https://doi.org/10.1117/12.2658246","url":null,"abstract":"Condition monitoring of Li-ion cells in battery packs for electric vehicles is becoming increasingly important, not only in terms of safety, but also with respect to predictive maintenance and recycling applications of the battery. Parameters already monitored by the battery management system are the pack temperature and electrical properties such as cell voltage and current flow. The compression load in a stacked battery pack, which changes not only during charging and discharging but also during aging, would provide valuable information about the health condition of the cell. This work shows the development of a dielectric elastomer sensor (DES) system especially adapted for monitoring the compression load of clamped Li-ion cells. By attaching special elastomer-based structures on both sides of an elastomer film, a thin and soft compression load sensor is realized. Various sensor configurations were investigated in order to increase the sensor performance in the required pressure range of the battery cell. The sensor design was varied by using different structures or by modifying the elastomer material or the electrodes of the intermediate elastomer film. The sensor characterization was performed by applying a controlled compression load and simultaneously recording the capacitance signals of the sensor. First cycling experiments using a sensor array in a clamped setup with the battery cell showed that the sensor capacitance depends on the compression load as the cell is charged and discharged. This result demonstrates the great potential in the field of condition monitoring of Li-ion battery cells.","PeriodicalId":89272,"journal":{"name":"Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics","volume":"468 1","pages":"124820J - 124820J-15"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85996550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Peristaltic pumps based on polyvinyl chloride gel actuator 基于聚氯乙烯凝胶作动器的蠕动泵

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2657831

Tomoki Motohashi, Naoki Ogawa, Hideko Akai, J. Shintake

{"title":"Peristaltic pumps based on polyvinyl chloride gel actuator","authors":"Tomoki Motohashi, Naoki Ogawa, Hideko Akai, J. Shintake","doi":"10.1117/12.2657831","DOIUrl":"https://doi.org/10.1117/12.2657831","url":null,"abstract":"Polyvinyl chloride (PVC) gel actuators, as an electroactive material, have promising features, such as large actuation strokes and fast response, generated with a simple structure at relatively low applied voltage. Hence, the effective exploitation of these features should enable pumps with high output performance and scalability. In this study, we present a peristaltic pump using PVC gel actuators. Specifically, the pump comprises three sets of rigid electrodes sandwiching a PVC gel membrane. Thus, applying a voltage to the electrodes leads to a deformation in the thickness direction. Consequently, this deformation squeezes a liquid below the membrane, resulting in a flow. Further, the sequential actuation of each electrode pair realizes peristaltic motion that generates a continuous flow of a liquid in one direction. In particular, we fabricated a pump using a PVC gel with a micro-patterned surface. More precisely, the surface pattern comprises 300 μm-base square pyramids (height 261 μm). Due to the relatively large surface pattern compared to the previous study, a large displacement in the thickness direction of ~110 μm was observed at a voltage of more than 500 V. Additionally, the maximum flow rate generated from the pump was 195.3 μL/min at 0.5 Hz. This value is comparable to or even higher than the values obtained in previous pumps that utilized PVC gel actuators.","PeriodicalId":89272,"journal":{"name":"Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics","volume":"14 1","pages":"124820T - 124820T-5"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86030746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A theoretical investigation of a two-degree-of-freedom vibro-impact triboelectric energy harvester for larger bandwidth 二自由度大带宽振动冲击摩擦电能量采集器的理论研究

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2658518

Mostafa K. Hassan, Alwathiqbellah Ibrahim

{"title":"A theoretical investigation of a two-degree-of-freedom vibro-impact triboelectric energy harvester for larger bandwidth","authors":"Mostafa K. Hassan, Alwathiqbellah Ibrahim","doi":"10.1117/12.2658518","DOIUrl":"https://doi.org/10.1117/12.2658518","url":null,"abstract":"The efficiency of the energy harvesters can be improved by increasing the harvester bandwidth. Towards this, we presented a Two-Degree of Freedom (2-DOF) Vibro-impact Triboelectric Energy Harvester by combining multi-modality and piecewise linearity of two close resonant frequencies. The harvester structure consists of a primary cantilever beam attached to a secondary cantilever beam through a tip mass. The secondary beam is attached in the opposite direction to the primary beam. The bottom surface of the secondary beam acts as an upper electrode of a triboelectric generator. A lower electrode with bonded Polydimethylsiloxane (PDMS) insulator is attached at some gap separation distance underneath the upper electrode to create an impact structure. When the system vibrates, an impact between the triboelectric layers generates an alternating electrical signal. A 2-DOF system with lumped parameter theoretical model was developed to extract the governing equations. The structure’s dynamic behavior at different excitation levels, separation distance, and surface charge density were investigated theoretically. As a result, we achieved a wider bandwidth for the designed energy harvester. The proposed harvester demonstrated an increase in the maximum output voltage by more than 300 percent, and 250 percent increase in the bandwidth, by changing the excitation level from 0.1g to 0.7g. The result of this study can pave the way for an efficient energy harvester that can scavenge ambient vibrations over a wide range of excitation frequencies.","PeriodicalId":89272,"journal":{"name":"Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics","volume":"9 1","pages":"124830X - 124830X-11"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90439877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Torque sensing and energy harvesting based on phase shift in two-point magnetic plucking 基于两点磁拔相移的扭矩传感与能量采集

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2657948

Y. Lo, C. Y. Chang, Y. Shu

引用次数: 0

Modeling of wind-induced vibration control and energy harvesting of traffic signal structures 交通信号结构风致振动控制与能量收集建模

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2658532

Feng Qian, Ihab Ragai, Xiaochun Nie, Yabin Liao

{"title":"Modeling of wind-induced vibration control and energy harvesting of traffic signal structures","authors":"Feng Qian, Ihab Ragai, Xiaochun Nie, Yabin Liao","doi":"10.1117/12.2658532","DOIUrl":"https://doi.org/10.1117/12.2658532","url":null,"abstract":"Traffic signal support structures are slender, highly flexible, and lightly damped. Therefore, they are particularly susceptible to wind-induced vibrations, which result in repeated load stresses and fatigue failures. A tuned energy harvesting inerter damper (TEHID)is proposed to reduce wind-induced vibrations of traffic signal support structures and convert the wasted vibration energy into electricity. The TEHID creates a large inertia mass by converting the low-frequency vibration motion of the light head to a high-speed rotation thereby eliminating the need for a large physical mass and accommodation space required by the conventional tuned mass damper (TMD). This paper focuses on the nonlinear dynamics modeling of the wind-induced vibration control and energy harvesting system for traffic signal support structures. The traffic signal structure is modeled as an L-shaped beam with multi-segments and the TEHID is simplified as a three-element device consisting of a spring, a damper, and an inerter. The nonlinear equations and the boundary conditions governing the motion of the integrated vibration control and energy harvesting system are derived from the energy method and presented herein. Modal analysis is conducted and the derived natural frequencies and mode shapes are compared with the finite element simulation results to validate the analytical model.","PeriodicalId":89272,"journal":{"name":"Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics","volume":"19 1","pages":"1248310 - 1248310-12"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90262870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical simulation of double impact 2DOF triboelectric energy harvesting for extended bandwidth 扩展带宽双冲击二自由度摩擦电能量采集的数值模拟

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2658526

M. Hassan, Alwathiqbellah Ibrahim

{"title":"Numerical simulation of double impact 2DOF triboelectric energy harvesting for extended bandwidth","authors":"M. Hassan, Alwathiqbellah Ibrahim","doi":"10.1117/12.2658526","DOIUrl":"https://doi.org/10.1117/12.2658526","url":null,"abstract":"Increasing the bandwidth of the vibration energy harvesters is one of the research emphases to maximize the energy harvested from the ambient. Here we design a Two-Degree of Freedom Vibro-impact Triboelectric energy harvester with a double-impact configuration, which combines multi-modality and piecewise linearity to improve the harvesting bandwidth of triboelectric energy harvesters. The harvester structure consists of primary and secondary cantilever beams with two integrated energy harvesters. The two beams are designed to operate at close natural frequencies, and under the effect of the impact, triboelectricity is generated, and the bandwidths of the resonators are combined to create a wide bandwidth. The double impact system is investigated numerically to examine the structure’s dynamic behavior at different excitation levels, separation distance, and surface charge density to extract an optimal parameter for achieving a wide combined bandwidth. The system demonstrates the capability of connecting multi-modality and piecewise linearity to significantly broaden the triboelectric energy harvester’s bandwidth.","PeriodicalId":89272,"journal":{"name":"Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics","volume":"33 1","pages":"124830Y - 124830Y-14"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90478198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards an understanding of piezoresistivity in filled polymer composites 对填充聚合物复合材料的压阻性的理解

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2658164

L. Ritchie, S. Rosset, I. Anderson

{"title":"Towards an understanding of piezoresistivity in filled polymer composites","authors":"L. Ritchie, S. Rosset, I. Anderson","doi":"10.1117/12.2658164","DOIUrl":"https://doi.org/10.1117/12.2658164","url":null,"abstract":"Filled polymer composites are capable of combining the favourable mechanical properties of polymers with desirable electrical properties of filler particles. Carbon-black elastomer nanocomposites are capable of conducting electricity while maintaining high stretchability. Despite these materials having been studied and utilised for a number of decades, the relationship between their internal structure and their macroscopic properties is still not fully understood. A major feature of their behaviour is significant piezoresistivity, which can be a nuisance in certain applications and a benefit in others. It is known that there is a relationship between the piezoresistivity of the material and the percolation threshold. However, the exact mechanisms underlying this behaviour are not rigorously understood. This work utilises Monte Carlo modelling to propose and examine ways in which the structure of the internal nanoparticle network, and the evolution of said network with strain could help to explain the piezoresistivity of these materials. Hopefully, a more detailed understanding of this mechanism will lead to an improved capability to customise it for various applications.","PeriodicalId":89272,"journal":{"name":"Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics","volume":"10 1","pages":"124820G - 124820G-10"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82103281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental realization of physical reservoir computing-based mechano-intelligence in self-adaptive phononic metastructures 基于物理储层计算的自适应声子元结构力学智能实验实现

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2657277

Yuning Zhang, Aditya Deshmukh, Kon-Well Wang

引用次数: 0

Leveraging machine learning for arrays of soft sensors 利用软传感器阵列的机器学习

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2661433

S. Rosset, Samuel Belk, M. H. Mahmoudinezhad, Iain A. Anderson

{"title":"Leveraging machine learning for arrays of soft sensors","authors":"S. Rosset, Samuel Belk, M. H. Mahmoudinezhad, Iain A. Anderson","doi":"10.1117/12.2661433","DOIUrl":"https://doi.org/10.1117/12.2661433","url":null,"abstract":"Sensor arrays are ubiquitous. They capture images in digital cameras, record the swipes of our fingers on the screens of our phones and tablets, or map pressure distribution over an area. Soft capacitive sensors have long been proposed to make electronic pressure-sensing skins. However, although different designs of entirely soft capacitive sensors have been proposed, large arrays of those sensors are challenging to produce. Indeed, arrays require high-resolution patterning of electrodes, and routing of long and thin electrical connections. These two tasks remain difficult or costly for the high-resistivity compliant electrodes of dielectric elastomer sensors. Instead of relying on the complex patterning of arrays to provide location resolution, we propose to use a plain, unstructured sensor with a single pair of electrodes but rely on computing power to infer pressure location and amplitude from clever sensing signals. Here, we propose a new machine-learning-based approach, which enables us to identify pressure location on a continuous 1D sensor split into 5 sensing zones with an accuracy greater than 98 %. We also demonstrate that we can identify pressure location and qualitative pressure magnitude (soft, medium, hard) on a 3-zone sensor with 99% accuracy.","PeriodicalId":89272,"journal":{"name":"Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics","volume":"75 1","pages":"1248208 - 1248208-10"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83835665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurements of the second-order elastic constants of powder-bed fusion 17-4 PH AM steel using ultrasound 粉末床熔合17-4 pham钢二阶弹性常数的超声测量

Smart structures and materials. Nondestructive evaluation for health monitoring and diagnostics Pub Date : 2023-04-28 DOI: 10.1117/12.2656960

Shuai Ju, Haifeng Zhang

引用次数: 0