Effect of preload treatment on elastic modulus of braided synthetic fiber rope for static loading

Sry, Vannei; Jung, Doyun; Mizutani, Yoshihiro; Endo, Gen; Todoroki, Akira

doi:10.1080/00405000.2020.1742274

Cited by 3 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it should be noted that there are higher variances in the slope of the specific stress–strain curves at the lower preload level from the second cycle, which could be attributed to the incomplete compacted rope structure and the elastic recovery of fibers. 12 Additionally, the specific stress–strain curves show greater slope at higher preload levels. This indicates the strong relationship between modulus and preload levels.…”

Section: Resultsmentioning

confidence: 98%

“…This can be explained by the rearrangement of the fibers and yarns. 12,31 It was easy to note that the transverse strains of the samples are much greater than the longitudinal strains (see Figure 7). The primary cause is related to the compaction of rope structure because of the spiral interlaced path of braid yarns.…”

Section: Longitudinal and Transverse Strainsmentioning

confidence: 96%

“…11 Moreover, the modulus of braided UHMWPE fiber ropes was basically stable with one cyclic loading, because the unrecoverable structural elongation of the rope structure was eliminated during the first cyclic loading. 12 For large diameter ropes, 10,000 cyclic loadings should be applied to completely stabilize the axial stiffness due to it having larger strands and more complex fiber alignment. 13 However, approximately 80%–90% of the peak axial stiffness can be achieved with 300–500 cyclic loadings.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The effects of preloading on tensile properties of braided polyarylate fiber ropes

Ding

Sun

Dong

et al. 2021

Textile Research Journal

View full text Add to dashboard Cite

In the present work, the effects of preloading on the tensile properties of braided polyarylate fiber ropes were investigated experimentally. Four kinds of samples with different pitch lengths were tested with designed preload levels. The deformation responses of the ropes were captured using digital image correlation (DIC) and micro-computed tomography (micro-CT). It is shown that the nonlinearity in the mechanical behavior of the ropes can be almost eliminated post-preloading with one cyclic loading, and the transverse strains are much greater than the longitudinal strains due to the compaction of rope structure because of the spiral interlaced path of braid yarns. The rope with shorter pitch length (larger braid angle) has larger longitudinal strain and smaller transverse strain due to the higher yarn crimp rate and tighter yarns, respectively. The preload level is the most important parameter for preloading. The chord modulus of the ropes reached an optimum level at the preload level of 40% break load, and the tensile strength can be increased by 15% at the preload level of 50% break load. Moreover, the stability of the tensile properties could be accelerated at the higher preload level. Consequently, preloading is vital to improve the tensile properties of braided polyarylate fiber ropes, with a preload level at least of 40% break load and 10 cyclic loadings.

show abstract

Section: Resultsmentioning

confidence: 98%

Section: Longitudinal and Transverse Strainsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effects of preloading on tensile properties of braided polyarylate fiber ropes

Ding

Sun

Dong

et al. 2021

Textile Research Journal

View full text Add to dashboard Cite

show abstract

“…AE signals larger than 40 dB AE were detected using a digitizer (Physical Acoustics; Type PCI-2) at a sampling rate of 10 MHz per channel during each test (threshold: 40 dB AE , amplifier: 40 dB AE , pre-trigger: 50 µsec). AE testing conditions of the woven GFRP are given in [33].…”

Section: Acoustic Emission Testingmentioning

confidence: 99%

Investigation of Ib-Values for Determining Fracture Modes in Fiber-Reinforced Composite Materials by Acoustic Emission

Jung

2021

Materials

View full text Add to dashboard Cite

This study analyzed failure behavior using Ib-values obtained from acoustic emission (AE) signals. Carbon fiber/epoxy specimens were fabricated and tested under tensile loads, during which AE signals were collected. The dominant peak frequency exhibited a specific range according to fracture mode, depending on the fiber structures. Cross-ply specimens, with all fracture modes, were used and analyzed using b- and Ib-values. The b-values decreased over the specimens’ entire lifetime. In contrast, the Ib-values decreased to 60% of the lifetime, and then increased because of the different fracture behaviors of matrix cracking and fiber fracture, demonstrating the usefulness of Ib-values over b-values. Finally, it was confirmed that abnormal conditions could be analyzed more quickly using failure modes classified by Ib-values, rather than using full AE data.

show abstract

Stabilization and modelling of tensile properties of braided synthetic fibre rope for dynamic loading

Sry

Mizutani

Endo

et al. 2021

The Journal of The Textile Institute

View full text Add to dashboard Cite

Effect of preload treatment on elastic modulus of braided synthetic fiber rope for static loading

Cited by 3 publications

References 13 publications

The effects of preloading on tensile properties of braided polyarylate fiber ropes

The effects of preloading on tensile properties of braided polyarylate fiber ropes

Investigation of Ib-Values for Determining Fracture Modes in Fiber-Reinforced Composite Materials by Acoustic Emission

Stabilization and modelling of tensile properties of braided synthetic fibre rope for dynamic loading

Contact Info

Product

Resources

About