Calibration of piezoresistive shape-memory alloy strain sensors

Mader, Thomas F.; Heusinger, Jonas v; Senf, Björn; Zoch, Martin; Winkler, Anja; Drossel, Welf‐Guntram

doi:10.1177/1045389x211057206

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…In order to determine the operational reliability of the GFRP construction, strain gauges were applied to the GFRP components when operating the Cargo Cruiser vehicle to enable structural health monitoring (SHM) for reliability tests and possible reduction in safety factors in lightweight construction. Pseudoelastic shape memory alloys (SMAs) are successfully used for this purpose in order to achieve a long service life of mechanical sensors [17,18]. The readout of SMA sensors during vehicle operation was tested by an ESP32 microcontroller.…”

Section: Maintainance and Optimized Lightweight Constructionmentioning

confidence: 99%

Light Electric Vehicles for Muscle–Battery Electric Mobility in Circular Economy: A Comprehensive Study

Wüstenhagen

Beckert

Lange³

et al. 2021

Sustainability

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Light electric vehicles (LEVs) facilitate a significant reduction in global warming potential (GWP) and other environmental impacts related to specific transport performance due to their lightweight construction. Low-voltage systems in the drive engine, an open vehicle design and online vehicle data processing allow LEVs to be repaired by independent workshops, thus enabling long vehicle use as well as conversion or retrofitting for periods of use beyond 20 years. LEVs are not yet very common in everyday life in Western Europe. In order to support the acceptance of muscle power-supported LEVs in the EU L7e registration class by users, the vehicle design and construction specifically address requirements in the areas of last-mile parcel delivery and other transport services, including passenger transport. Life cycle assessment was used to investigate two construction methods for LEVs, mixed construction and fibre composite construction, in terms of the production, service life phase and end of life. A vehicle configuration was developed which, in addition to resource-saving production and long-life operation, enables easy access for users and maintenance of the LEV for various purposes. The resource efficiency of light electric vehicles was proven with regard to the ecological aspects. The vehicle design shown here shows high potential for LEVs in the circular economy.

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Section: Maintainance and Optimized Lightweight Constructionmentioning

confidence: 99%

Light Electric Vehicles for Muscle–Battery Electric Mobility in Circular Economy: A Comprehensive Study

Wüstenhagen

Beckert

Lange³

et al. 2021

Sustainability

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“…Nitinol, a popular SMA material, usually has a stroke of approximately 4–8% of its original length [ 14 , 15 ]. However, it is possible to convert this minor deformation into stronger out-of-plane deformations by integrating it into a polymeric matrix [ 16 ]. The design and fabrication of an integrated sensor system capable of discriminating among different stimuli for motion monitoring are challenging.…”

Section: Introductionmentioning

confidence: 99%

A Flexible Double-Sided Curvature Sensor Array for Use in Soft Robotics

Benarrait,

Ullah-Khan,

Terrien

et al. 2024

Sensors

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This paper describes the design, fabrication, integration, characterization, and demonstration of a novel flexible double-sided curvature sensor array for use in soft robotics. The paper explores the performance and potential applications of a piezoresistive sensor array consisting of four gold strain gauges on a flexible polyimide (PI) substrate arranged in a Wheatstone bridge configuration. Multiple sensor strips were arranged like the fingers of a hand. Integrating Shape Memory Alloy (SMA) foils alongside the fingers was explored to mimic a human hand-gripping motion controlled with temperature, while curvature sensor array strips measure the resulting finger shapes. Moreover, object sensing in a flexible granular material gripper was demonstrated. The sensors were embedded within Polydimethylsiloxane (PDMS) to enhance their tactile feel and adhesive properties. The findings of this study are promising for future applications, particularly in robotics and prosthetics, as the ability to accurately mimic human hand movements and reconstruct sensor surfaces paves the way for robotic hand functionality.

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“…The sensing signals can be divided into a force signal [ 49 ], capacitive signal [ 50 ], current signal [ 51 ], and a combination of voltage and current signal [ 52 ]. Similarly, different sensing signals based on SMAs can also sense strain [ 53 , 54 ]. In this research, we propose a soft robot module driven by SCPAM strings with a proprioceptive sensing capability.…”

Section: Introductionmentioning

confidence: 99%

A Proprioceptive Soft Robot Module Based on Supercoiled Polymer Artificial Muscle Strings

et al. 2022

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In this paper, a multi-functional soft robot module that can be used to constitute a variety of soft robots is proposed. The body of the soft robot module made of rubber is in the shape of a long strip, with cylindrical chambers at both the top end and bottom end of the module for the function of actuators and sensors. The soft robot module is driven by supercoiled polymer artificial muscle (SCPAM) strings, which are made from conductive nylon sewing threads. Artificial muscle strings are embedded in the chambers of the module to control its deformation. In addition, SCPAM strings are also used for the robot module’s sensing based on the linear relationship between the string’s length and their resistance. The bending deformation of the robot is measured by the continuous change of the sensor’s resistance during the deformation of the module. Prototypes of an inchworm-like crawling robot and a soft robotic gripper are made, whose crawling ability and grasping ability are tested, respectively. We envision that the proposed proprioceptive soft robot module could potentially be used in other robotic applications, such as continuum robotic arm or underwater robot.

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Calibration of piezoresistive shape-memory alloy strain sensors

Cited by 5 publications

References 5 publications

Light Electric Vehicles for Muscle–Battery Electric Mobility in Circular Economy: A Comprehensive Study

Light Electric Vehicles for Muscle–Battery Electric Mobility in Circular Economy: A Comprehensive Study

A Flexible Double-Sided Curvature Sensor Array for Use in Soft Robotics

A Proprioceptive Soft Robot Module Based on Supercoiled Polymer Artificial Muscle Strings

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