Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ayers, R.R. Aksu, S.B. |
| Copyright Year | 2009 |
| Description | Author affiliation: Stress Engineering Services, Inc. 13800 Westfair East Dr. Houston, TX 77041 USA (Ayers, R.R.; Aksu, S.B.) |
| Abstract | Fatigue life of deepwater mooring lines is a very important issue in the design of mooring systems for offshore structures. Polyester ropes experience cyclic loading over the life of the mooring, and the remaining strength of those ropes is reduced over time as individual fibers comprising the rope are broken. Fatigue and wear testing of polyester fibers and polyester subropes has shown that two distinct mechanisms are at work: (1) true fatigue failures in single polyester fibers and (2) fiber damage due to cyclic wear caused by subrope strands rubbing against one another near the toe of eye splices. This paper compares and contrasts these key issues of fiber fatigue and subrope strand-on-strand cyclic wear. A new method was developed to test fretting wear of subrope strands subjected to cyclic loading. This method, called the 20-Hurricane method, has been demonstrated and found to constitute a strand-on-strand abrasion wear method conceptually similar to the yarn-on-yarn abrasion test methods used for yarns, rather than strands. The test can measure both strength reduction and maximum elongation performance of polyester subrope designs due to damage from a series of 20 hurricanes over a 20-year period. Test results for various subrope designs are described, and the designs are evaluated in terms of reduction in subrope strength due to the effects of cyclic wear. The authors propose that the 20-Hurricane test be adopted as a “benchmark” by industry for qualification testing of different designs and brands of polyester rope, and types of splices and marine finishes. Other potential uses of the 20-Hurricane test method for synthetic fiber ropes are also proposed. |
| Starting Page | 1 |
| Ending Page | 6 |
| File Size | 971585 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424449606 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-10-26 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | MTS |
| Subject Keyword | Fatigue System testing Optical fiber testing Life testing Synthetic fibers Stress Production systems Design engineering Yarn Hurricanes |
| Content Type | Text |
| Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|