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Assessment of Kernmantle Ropes in terms of Sheath Slippage: Method and Results Cover

Assessment of Kernmantle Ropes in terms of Sheath Slippage: Method and Results

Fibres & Textiles in Eastern Europe
Volume 30 (2022): Issue 6 (December 2022)
By: Krzysztof Baszczyński  
Open Access
|Dec 2022
Figures & tables

Figures & Tables

Fig. 1

Guided type fall arrester protecting against falls from height with a flexible anchor line made of kernmantle rope: 1 – flexible anchor line (kernmantle rope), 2 – guided type fall arrester (A – closed, B – open)

Fig. 2

Examples of damage to flexible anchor line

Fig. 3

Diagram of a kernmantle rope loading system for sheath slippage testing [6,7]: F – loading force, V – rope movement speed, 1 –kernmantle rope tested, 2 – movable steel plates, 3 – fixed steel plates

Fig. 4

Design of the rope clamping module: 1 – the rope tested, 2 – movable and fixed plates, 3 – supporting structure, 4 – weights exerting a loading force of F = 50 N on the plates, 5 – Kevlar string I

Fig. 5

Sample design of plates on a stand for testing sheath slippage in kernmantle ropes: a – movable plate, b – fixed plate

Fig. 6

Stand for testing sheath slippage in kernmantle ropes: 1 – rope compression module, 2 –rope tested, 3 – Kevlar string I, 4 – drive module, 5 – Zwick testing machine

Fig. 7

Drive module of the stand for testing sheath slippage in kernmantle ropes: 1 – Kevlar string I, 2 – string I reel, 3 – Kevlar string II, 4 – string II roller, 5 – string II tensioner, V – traverse speed of the Zwick testing machine

Fig. 8

Speed of the test rope moving through the compression module over time

Fig. 9

Kernmantle ropes subjected to sheath slippage tests

Fig. 10

Sample results of kernmantle rope sheath slippage tests: A – negative displacement, B – positive displacement

Fig. 11

Results of kernmantle rope sheath slippage tests

Kernmantle ropes subjected to sheath slippage tests and the results obtained

Rope symbolRope typeRope diameter d [mm]Mean sheath slippage SSm [mm]Standard deviation SD [mm]Coefficient of variation for SD Wsx [%]
ATitan 11111.40.9617768.7
BIceline8.1−0.780.3033238.9
CAqualine9.510.60.418333.9
DPro-Static101.50.6123740.8
EWall master VI10.5−1.060.4393241.4
FApollo II11−0.660.2073631.4
GPerformance Static127.51.1180314.9
HPes 12-K-24125.11.2062323.7
IPa-200-12-K 24x21210.11.4815514.7
JTendon11−2.660.421915.9
KBaobab Uni Core13.51.340.3781528.2
DOI: https://doi.org/10.2478/ftee-2022-0053 | Journal eISSN: 2300-7354 | Journal ISSN: 1230-3666
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Language: English
Page range: 67 - 73
Published on: Dec 30, 2022
Published by: Łukasiewicz Research Network, Institute of Biopolymers and Chemical Fibres
In partnership with: Paradigm Publishing Services
Publication frequency: Volume open
Keywords:
kernmantle ropes,
sheath slippage,
falls from a height,
guided type fall arresters
Related subjects:
Business and economics,
Business management,
Business informatics,
Process management,
Industrial chemistry,
Cellulose, paper and textiles,
Polymer science and technology,
Materials sciences,
Biomaterials and natural materials

© 2022 Krzysztof Baszczyński, published by Łukasiewicz Research Network, Institute of Biopolymers and Chemical Fibres
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 30 (2022): Issue 6 (December 2022)
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