Skin strain fields at the shoulder joint for mechanical counter pressure space suit development

Obropta, Edward; Newman, Dava

doi:10.1109/aero.2016.7500744

Cited by 17 publications

(21 citation statements)

References 8 publications

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“…Traditional landmark locations from the waist to the knee include: waist at front, back, left and right, the tenth rib, iliospinale anterius, max prominence, crotch level, maximum thigh, mid thigh and suprapatellar [10]. Many landmark methods have been developed to capture the body in a standard A-frame and dynamic postures, including the use 3D markers [1], stickers and markers [2,7], stamps [11], and light projection [12]. Incremental landmark spacing [2,8] and body crease lines [7] have also been used to track movement of the body.…”

Section: Landmarking and 3d Scanningmentioning

confidence: 99%

“…Multiple landmarking techniques from previous studies were analyzed for the waist-hip-thigh region of the body. Five landmark application tools were reviewed; stickers and washable markers [13], 3D landmarking [1], stamps [11], and light projection [12], along with six methods to landmark the body; traditional ISO landmark locations [10], crease and body lines [14,15], incremental spacing [2], landmarks printed on garments [16], reference grids [17,8], and stamped speckle patterns [18].…”

Section: Landmarkingmentioning

confidence: 99%

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Method to Capture and Analyze the Waist-Hip-Thigh Body Region of Seated-Standing 3D Scans

Griffin¹,

Juhnke²,

Seifert

et al. 2019

Proceedings of 3DBODY.TECH 2019 - 10th International Conference and Exhibition on 3D Body Scanning and Processing Technologies,

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The purpose of this research was to explore new methods of 3D scanning, body postures, and landmarking techniques to complete in-depth analyses of skin deformation, measurement change, and shape change of the waist-hip-thigh region of the body. There is a need to develop and test new integrated measurement analyses using 1D, 2D, and 3D data to quantify how and where the body is changing in different postures. An integrated approach was taken to select the appropriate 3D scanning technology, develop a landmarking method, and position the body to analyze the waist-hip-thigh region. A convenience sample of 11 women participated in the pilot study, ranging in age from 41-73. Using a quadrant landmarking technique, the body was divided into sections to locally analyze 1D and 2D measurements, while conducting volume and curve analysis to aid our understanding of shape change. Local percent change of each circumference was significant, and the data across the various measurements captured the expansion and shrinking of the body. Additionally, the 1D, 2D, and 3D analysis of the models shows the body deforming differently based on participant size, indicating this type of data could be critical for improved size system creation. The results from the extraction of curves represents exciting frontiers in 3D shape research and in the future will enable shape to be more easily incorporated into wearable garments. This data can improve the development of materials, trims, pattern design, and sizing systems. New 3D scanning methods to quantify diverse bodies can improve a company's competitive advantage through enhanced product fit and inclusive, quality design for all.

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Section: Landmarking and 3d Scanningmentioning

confidence: 99%

Section: Landmarkingmentioning

confidence: 99%

Method to Capture and Analyze the Waist-Hip-Thigh Body Region of Seated-Standing 3D Scans

Griffin¹,

Juhnke²,

Seifert

et al. 2019

Proceedings of 3DBODY.TECH 2019 - 10th International Conference and Exhibition on 3D Body Scanning and Processing Technologies,

View full text Add to dashboard Cite

show abstract

“…At present, there is no standard procedure for skin strain analysis. Different techniques and technologies have been used to this end: magnetic resonance imaging (Tran et al, 2007), optical coherence tomography (Hendriks et al, 2006), ultrasound (Hendriks et al, 2003), 3-D scanning (Van den Herrewegen et al, 2014), multiple-view stereo matching (Thabet et al, 2014;Kimura et al, 2008), motion capture systems (Mahmud et al, 2010) and digital image correlation (DIC) (Staloff et al, 2008;Evans and Holt, 2009;Miura et al, 2012;Yoneyama, 2010;Obropta and Newman, 2016). At the same time, the procedure to calculate skin strain depends on the technology used.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the procedure to calculate skin strain depends on the technology used. The most commonly used procedures for this purpose combine optical techniques with finite strain theory and the strain gauge rosette method (Obropta Jr., 2015;Evans and Holt, 2009;Miura et al, 2012;Staloff et al, 2008). The finite strain theory combined with 3-D digital image correlation (3D-DIC) has been shown to be the most accurate method as it provides the highest spatial resolution to measure the skin strain field during movement (Miura et al, 2012;Obropta Jr., 2015;Staloff et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…The finite strain theory combined with 3-D digital image correlation (3D-DIC) has been shown to be the most accurate method as it provides the highest spatial resolution to measure the skin strain field during movement (Miura et al, 2012;Obropta Jr., 2015;Staloff et al, 2008). Commercial DIC systems have been used successfully to analyze 3-D skin strain (Moerman et al, 2009;Obropta and Newman, 2016). However, DIC systems are expensive and unaffordable in many cases.…”

Section: Introductionmentioning

confidence: 99%

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A new methodology to identify minimum strain anatomical lines based on 3-D digital image correlation

et al. 2017

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Abstract.Today there is continuous development of wearable devices in various fields such as sportswear, orthotics and personal gadgets, among others. The design of these devices involves the human body as a support environment. Based on this premise, the development of wearable devices requires an improved understanding of the skin strain field of the body segment during human motion. This paper presents a methodology based on a three dimensional digital image correlation (3D-DIC) system to measure the skin strain field and to estimate anatomical lines with minimum deformation as design criteria for the aforementioned wearable devices. The errors of displacement and strain measurement related to 3-D reconstruction and out-of-plane motion are investigated and the results are acceptable in the case of large deformation. This approach can be an effective tool to improve the design of wearable devices in the clinical orthopaedics and ergonomics fields, where comfort plays a key role in supporting the rehabilitation process.

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Dynamic, Tunable, and Conformal Wearable Compression Using Active Textiles

Granberry

Pettys‐Baker

Woelfle

et al. 2022

Adv Materials Technologies

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New medical compression technologies that are simultaneously low‐profile, facile to don, and dynamic—applying medical compression only when needed—can expand the use of wearable compression, increase patient compliance, and lead to better medical outcomes. Dynamic and conformal wearable compression devices are presented that can be donned in a low‐stiffness state and transition into a high‐stiffness and, consequently, high‐compression state, on‐demand. These devices are enabled by active textiles developed from custom NiTi filaments that remain inactive at room temperature and accomplish actuation proximal to the human body surface. Further, these compression devices exploit NiTi material hysteresis to sustain a high‐compression state post‐heating and upon equilibrium with the body surface temperature for thermally‐comfortable, on‐body performance. Two case study examples—1) a consumer medical compression device and 2) a custom astronaut compression device—demonstrate the generalizability and flexibility of the engineering and design methods to develop a range of dynamic, tunable, and conformal compression devices with different goals and requirements. Further, this work demonstrates a roadmap for developing wearable systems that can accommodate a range of users without sacrificing system performance. This research opens doors for new NiTi‐based medical and consumer applications that interface with the body surface.

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Skin strain fields at the shoulder joint for mechanical counter pressure space suit development

Cited by 17 publications

References 8 publications

Method to Capture and Analyze the Waist-Hip-Thigh Body Region of Seated-Standing 3D Scans

Method to Capture and Analyze the Waist-Hip-Thigh Body Region of Seated-Standing 3D Scans

A new methodology to identify minimum strain anatomical lines based on 3-D digital image correlation

Dynamic, Tunable, and Conformal Wearable Compression Using Active Textiles

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