AI SearchOptimization of performance parameters of a locally-made vibratory subsoiler (Record no. 84047)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03562nam a2200409 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818170830.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 080598 th eng |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10482155 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.AE-93-5 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Bandalan, Elmer P. |
| 245 10 - TITLE STATEMENT | |
| Title | Optimization of performance parameters of a locally-made vibratory subsoiler |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1993 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 67 leaves : |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. AE-93-5 |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 1995 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Field experiments were conducted to optimize the performance parameters of a singleshank, tractor-mounted oscillating subsoiler. Tests were conducted at frequencies of oscillation of 3.7, 5.67, 7.58, 9.48 and 11.45 Hz; amplitudes of 18, 21, 23.5, 34, and 36.5 mm; and forward speeds of 1.85, 2.20 and 3.42 kmph at soil moisture content close to the lower plastic limit. The performance was expressed in terms of draft ratio, power ratio, energy ratio and soil loosening (in terms of percentage reduction in bulk density of the soil near the surface). It was found that the forward speed, amplitude and frequency significantly affected the draft reduction, power increase and soil loosening. Their combined effect expressed in the velocity ratio parameter (the ratio of peak tool velocity and forward speed) however has the strongest influence. The draft ratio was less at high amplitudes and decreased sharply up to a velocity ratio of 2. A maximum of 68 % reduction in draft was observed at a forward speed of 2.2 kmph, amplitude 36.5 mm and frequency 9.48 Hz. The power requirement with oscillation were higher compared to no oscillation. At maximum draft reduction the power ratio was 1. 18. Similarly, oscillation gave better degree of soil loosening than no oscillation and was greater at higher velocity ratio. At maximum draft reduction, a 34. 7 % reduction in soil qulk density was observed while for no oscillation, it was found to be 10%. The optimum performance of the subsoiler was a compromise between draft reduction and better soil loosening, and power increase and was limited by its structural strength. The machine can function effectively at a frequency range of 6 to 9 Hz. An ideally optimum combination of oscillating_ parameters is very difficult to attain under actual field conditions. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Agricultural machinery |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Gupta, Chandra P., |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Salokhe, Vilas M., |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Singh, Gajendra, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Clough, David Gee, |
| Relator term | Examination committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tanya Niyamapa, |
| Relator term | Examination committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | King of Thailand, |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. AE-93-5 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B15996">http://203.159.5.9/ait-thesis/detail.php?q=B15996</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10482155 |
| b | mnait |
| c | x |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240403 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | x |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120577969 |
| CREATED | CREATED : 2014-02-18 |
| RECORD Id | RECORD # : i12765880 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120376149 |
| CREATED | CREATED : 2016-01-06 |
| RECORD Id | RECORD # : i13010475 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.AE-93-5 | 30050120577969 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.AE-93-5 | 30050120376149 | 18/08/2026 | 18/08/2026 | 40-Archives |