Sensor Integrated Load-Bearing Structures: Measuring Axis Extension with DIC-Based Transducers

Groche, Peter; Groche, Peter

doi:10.3390/s21124104

Cited by 7 publications

(14 citation statements)

References 49 publications

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“…This motion results, due to the oblique arrangement of the mirrors, in a radial displacement of the twice mirrored (blue right) on the image sensor area (Fig. 11) [39] Downstream image and data processing makes it possible to determine the displacements occurring in the two objects and assign them to the corresponding force/ torque components [39]. Figure 12 shows the validation results of this concept.…”

Section: The Integration Of Multi-axis Force/torque Sensorsmentioning

confidence: 98%

“…Consequently, higher flexibility in the manufacturing of sensory structures with multiple measuring axes must be achieved through the use of alternative sensor concepts. In a previous study, we presented an optical sensor, which allows non-contact threedimensional force/torque measurement [39]. The sensor, shown in Fig.…”

Section: The Integration Of Multi-axis Force/torque Sensorsmentioning

confidence: 99%

“…the reference displacement and twists at the host structure (x-axis) are calculated based on the measured forces and torques at the reference sensor. The calculation procedure of the resulting displacements and twists in the optical sensor from the acquired images is described in detail in [39].…”

Section: The Integration Of Multi-axis Force/torque Sensorsmentioning

confidence: 99%

“…Possible ways to achieve this include easily deformable areas on the Fig. 11 Schematic design of the sensor [39] and a CT scan image of the sensor inside a tubular host structure Fig. 12 Results of uniaxial and multiaxial loading of a prototype with an integrated optical sensor.…”

Section: Outlook For Future Workmentioning

confidence: 99%

“…12 Results of uniaxial and multiaxial loading of a prototype with an integrated optical sensor. The vertical axis shows the value determined by the developed sensor, and the horizontal axis shows the reference values obtained by a commercial reference sensor according to [39] joining partners, which allow the joining zone to be created with low joining forces. When integrating carrier disks of optical elements in hollow tube, e.g.…”

Section: Outlook For Future Workmentioning

confidence: 99%

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Sensor-integrated structures in mechanical engineering: challenges and opportunities for mechanical joining processes

Groche

2022

Prod. Eng. Res. Devel.

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In recent years, the trend to extend the functionality of passive metallic structures in mechanical engineering through sensor integration has emerged. This trend is driven by the growing demand for monitoring and/or control approaches. Current state of the art sensory structures and machine elements are successfully produced by integrating sensors into metallic structures using various joining techniques. However, the widespread implementation of sensory structures and machine elements has a long way to go to be achieved. For this purpose, the sensory structures must be produced not only as standardized components, but also cost-effectively with flexible configuration of the sensory characteristics and the integration of associated electronics. This paper provides an overview of the latest joining technologies for sensory structures. A discussion of the features of each joining technique will be given. In view of the importance of force/torque measurement in load-bearing structures and machine elements, an overview will be provided on the advantages and challenges of joining processes that substitute electromechanical transducers with optical non-contact measurement techniques.

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Section: The Integration Of Multi-axis Force/torque Sensorsmentioning

confidence: 98%

Section: The Integration Of Multi-axis Force/torque Sensorsmentioning

confidence: 99%

Section: The Integration Of Multi-axis Force/torque Sensorsmentioning

confidence: 99%

Section: Outlook For Future Workmentioning

confidence: 99%

Section: Outlook For Future Workmentioning

confidence: 99%

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Sensor-integrated structures in mechanical engineering: challenges and opportunities for mechanical joining processes

Groche

2022

Prod. Eng. Res. Devel.

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A Dual-pronged approach for evaluation of contact stresses in nylon hybrid composite gears under misalignment

Simhadri,

Suman,

Rao

et al. 2023

Eng. Res. Express

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Polymer based composite gears have been a subject of intense studies by virtue of their wide gamut of applications. The authors have therefore embarked on developing a polymer-based composite with Graphene oxide (GO) and Tungsten Di-sulphide (TD) as reinforcements specifically for gear-based applications. The work outlined in this paper mainly deals with the fabrication of spur gears with the developed composite and investigating the contact stresses induced in these gears under misalignment of shafts. A dual-pronged approach is adopted in this procedure. The first being simulation studies using ANSYS WORKBENCH, while, the second and the most vital approach is through experimentation. The experimental approach required the design and development of a universal gear test rig (GTR) equipped with Data Acquisition System [DAS], which was successfully accomplished. The GTR was particularly premeditated to accommodate and adjust the alignment of the shaft axes. The experimentation was conducted under radial, axial and angular misalignments and combinations thereof. The composite material developed for this specific application was observed to function effectively in-comparison to the existing gear materials particularly under misalignment. The strains and stresses obtained from analytical and experimental methods were compared and found to be nearly identical under corresponding misalignments. Furthermore, it can be deduced from the studies that the combined effect of radial and yaw misalignments produces the highest strain, which is in fact, almost ten times that of strain in other forms of misalignment. The results of this research work will contribute in enhancing the understanding of nylon composite gear’s performance under misalignment conditions, enabling the best maintenance practices in industries.

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Image-based, structure-integrated sensor for measuring multiaxial deflection in stiff machine elements

Thoma

Depta

Groche

2023

Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2023

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Sensory machine elements with integrated force sensors are paving the way for accurate load condition monitoring in machine tools. However, some machine elements face a fundamental measurement challenge: the intended high stiffness reduces any deformation during the operational lifespan drastically. In this study, an approach for high-resolution acquisition of elastic structure deformation under load in very stiff machine elements is presented. A novel optical imagebased and structure-integrated deflection sensor allows a cost-effective two-dimensional deflection measurement with a measurement resolution of up to 90 nm and an accurate spatial resolution of the force direction. In particular, the change from local strain detection by strain gauge films to displacement measurements of reference planes allows for an increase of the measurement resolution. This paper discusses the relevant aspects and demonstrates the achieved measurement resolution by a biaxial sensory bending roll for the split profile bending process based on an optical image-based deflection sensor.

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Sensor Integrated Load-Bearing Structures: Measuring Axis Extension with DIC-Based Transducers

Cited by 7 publications

References 49 publications

Sensor-integrated structures in mechanical engineering: challenges and opportunities for mechanical joining processes

Sensor-integrated structures in mechanical engineering: challenges and opportunities for mechanical joining processes

A Dual-pronged approach for evaluation of contact stresses in nylon hybrid composite gears under misalignment

Image-based, structure-integrated sensor for measuring multiaxial deflection in stiff machine elements

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