Development of hydraulic fast switching valves with highly balanced valving elements / (Record no. 67697)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02653cam a2200337 a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EG-GiCUC |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250223032051.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 180927s2018 ua h f m 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EG-GiCUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GiCUC |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 049 ## - LOCAL HOLDINGS (OCLC) | |
| Holding library | Deposite |
| 097 ## - Thesis Degree | |
| Thesis Level | M.Sc |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | Cai01.13.13.M.Sc.2018.Ad.D |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Adham Ibrahim Hassan Hosni |
| 245 10 - TITLE STATEMENT | |
| Title | Development of hydraulic fast switching valves with highly balanced valving elements / |
| Statement of responsibility, etc. | Adham Ibrahim Hassan Hosni ; Supervised Saad Abdelfattah Kassem , Mohamed Ahmed Elgamil |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | استحداث صمامات تحكم هيدروليكية سريعة الانتقال بين أوضاع التشغيل بعناصر تحكم صمامه عالية الاتزان |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Cairo : |
| Name of publisher, distributor, etc. | Adham Ibrahim Hassan Hosni , |
| Date of publication, distribution, etc. | 2018 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 81 P. : |
| Other physical details | facsimiles ; |
| Dimensions | 30cm |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | High frequency hydraulic control valves can be realized when the required stroking forces and displacements of the valving elements, whether poppets or spools, are small enough to cope with the capabilities of compact actuating devices. A new class of valves are proposed and analyzed in this work, in which the valving elements are subjected to the high inlet pressure on both sides that have small area difference. This would result in reducing both the required driving forces and the strength needs of these valving elements. The return of the valving elements to their initial positions in this case results from the small pressure and flow forces unbalance only, or with the assistance of an additional spring force. A valve design with long control edge is developed to allow obtaining appreciable large control orifice area from a small valving element displacement, and hence a high flow gain is realized. The small valving element displacement reduces the demands imposed on the actuating devices and allows the use of piezoelectric actuators of short stroke or electromagnetic driving devices that generate high forces at narrow gaps and reasonable ampere-turn values. The configurations of the proposed fast switching valves well fit the requirements of the pulse width modulation control techniques |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Additional physical form available note | Issued also as CD |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Fast switching |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Hydraulic |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Valve |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mohamed Ahmed Elgamil , |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Saad Abdelfattah Kassem , |
| Relator term | |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://172.23.153.220/th.pdf">http://172.23.153.220/th.pdf</a> |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Nazla |
| Reviser | Revisor |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Samia |
| Reviser | Cataloger |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Source of classification or shelving scheme | Not for loan | Home library | Current library | Date acquired | Full call number | Barcode | Date last seen | Koha item type | Copy number |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 11.02.2024 | Cai01.13.13.M.Sc.2018.Ad.D | 01010110076038000 | 22.09.2023 | Thesis | ||
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | مخـــزن الرســائل الجـــامعية - البدروم | 11.02.2024 | Cai01.13.13.M.Sc.2018.Ad.D | 01020110076038000 | 22.09.2023 | CD - Rom | 76038.CD |