An evaluation of force attenuation, comfort properties and density of materials for hip protective pads

Wardiningsih, Wiah; Troynikov, Olga

doi:10.1177/1558925019853955

Cited by 7 publications

(4 citation statements)

References 16 publications

(33 reference statements)

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“…They have good air permeability and resilience to compression and therefore a good substitute for conventional cushioning materials such as polychloroprene, polyurethane and polyethylene foam, etc. These fabrics are used for a wide range of products including shoes [1], bras [2], bedding [3], car seats [4], wound dressings [5,6], pressure inserts [7] and hip protective pads [8]. Spacer fabrics with different thicknesses and compression behaviours are needed to accommodate different applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of inlaid elastic yarns and inlay pattern on physical properties and compression behaviour of weft-knitted spacer fabric

Sukigara

Takeuchi

2020

Journal of Industrial Textiles

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Spacer fabrics are commonly used as cushioning materials. Their compression properties are one of the most important concerns in determining their specific end-use. Therefore, it is time and cost- efficient to have another means available that could allow quick and easy modifications to the compression behaviour of spacer fabrics and control them too. In this study, a method that uses an elastic inlay is adopted to modify the physical and compression properties of spacer fabrics. Fifteen samples constructed with different spacer structures and inlay yarns and patterns were fabricated and then evaluated. The results show that spacer fabrics with different thicknesses, densities and compression behaviours can be obtained by using different inlay patterns and elastic yarns. Increasing the number of miss stitches in the inlay pattern can help to increase the thickness and stiffness of spacer fabric and withstand a higher compression strength. However, when the number of miss stitches further increases to 3 miss stitches between every tuck stitch, the irregularity of the spacer structure would increase and could show adverse effects to certain spacer structures. The spacer fabric made by incorporating an elastic inlay can retain air permeability and a lower fabric weight than that made by the knit stitches of elastic yarns together with the surface yarns. By changing the inlay pattern, a spacer fabric with different compression behaviours in different areas of the same fabric can be realised. This novel method can increase the flexibility of creating a spacer fabric with the desired properties.

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Section: Introductionmentioning

confidence: 99%

Effect of inlaid elastic yarns and inlay pattern on physical properties and compression behaviour of weft-knitted spacer fabric

Sukigara

Takeuchi

2020

Journal of Industrial Textiles

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“…Rekayasa desain dalam sebuah produk sering digunakan untuk mengatasi berbagai kasus dalam masalah kesehatan. Salah satu contoh produk yang memanfaatkan rekayasa desain adalah hip protective pad [10] . Hip protective pad merupakan suatu produk yang memodifikasi celana biasa menjadi celana yang aman ketika orang terjatuh.…”

Section: Pendahuluanunclassified

Analisis Desain Bantalan Celana Untuk Penderita Hemoroid (Ambeien)

Khafidh,

Affandi,

Dewi Pramaningtyas

et al. 2023

JRM

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Hemorrhoids are an anorectal disease due to dilation of the blood vessels around the anus. At a certain level, hemorrhoids often cause pain complaints experienced by some patients, especially during sitting. One of the solution is to use a special underpants in which it reduces the pain during sitting, and at the same time, provides comfort feel for other activities. Therefore, an underpants pad is important to be designed to achieve the aforementioned goals. In the present work, an optimum underpants pad is designed, manufactured, and tested to the patients. The optimum design of underpants pad is determined by a Computer Aided Engineering (CAE) simulation. Two parameters of the underpants pad is investigated, namely design and thickness. Three type of designs are varied, namely design 1, design 2, and design 3. While the thickness of 3, 5, and 7 mm are used. The results show that design B and thickness of 7 mm gives the lowest stress on the buttocks. Based on the simulation results, several products are manufactured and tested by the patients. The material of underpants pad is Polyurethane Foam (PUF). All patients determined that the product with design B, thickness of 5 mm, and density of 115 kg/cm3 is the best product.

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“…where FA is the force attenuation (N); f SR is the impact force on silicone rubber (SR) as artificial flesh (N); f SF is the impact force on the experimental spacer fabric (N). Force attenuation was normalized per unit volume using equation 4 due to variation of the thickness of experimental spacer fabrics, assuming the effect of thickness of spacer fabrics on force attenuation is linear in all samples (Wardiningsih and Troynikov, 2019).…”

Section: Impact Testmentioning

confidence: 99%

Force attenuation capacity of weft-knitted spacer fabric in low-velocity impact

Rudy

Wardiningsih

2021

IJCST

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PurposeThis study aimed to determine the peak impact force and force attenuation capacity of weft-knitted spacer fabrics intended for padding that can be used for human body protection against impact.Design/methodology/approachA total of five weft-knitted spacer fabrics were fabricated with four different diameters of nylon monofilament yarns and one doubled monofilament yarns, respectively. The impact performances of the weft-knitted spacer fabrics were tested using a drop test method with a customized test rig to simulate falling. Impact tests were conducted on single- and multilayered experimental spacer fabrics to investigate the peak impact force and force attenuation capacity.FindingsIt was found that weft-knitted spacer fabric with a coarser or larger diameter of monofilament spacer yarn generated lower impact force and higher force attenuation capacity, thus resulting in better impact performance. Greater force attenuation can be achieved by utilizing a higher number of spacer fabric layers. However, the increase in thickness must be considered with the spacer fabric end use.Originality/valueThis study employed relatively coarse nylon monofilament yarn as spacer yarns to gain knowledge on the impact performance of weft-knitted spacer fabrics compared to warp-knitted spacer fabrics which are more common. The results showed that the diameter of spacer yarn significantly influenced the impact performance of the experimental weft-knitted spacer fabrics. These results could be useful for designing and engineering textile-based impact protectors.

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An evaluation of force attenuation, comfort properties and density of materials for hip protective pads

Cited by 7 publications

References 16 publications

Effect of inlaid elastic yarns and inlay pattern on physical properties and compression behaviour of weft-knitted spacer fabric

Effect of inlaid elastic yarns and inlay pattern on physical properties and compression behaviour of weft-knitted spacer fabric

Analisis Desain Bantalan Celana Untuk Penderita Hemoroid (Ambeien)

Force attenuation capacity of weft-knitted spacer fabric in low-velocity impact

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