Design, fabrication and performance evaluation of cassava stakes cutter [manuscript]
| dc.contributor.author | Jairies Fae P. Batas | |
| dc.date.accessioned | 2026-02-20T01:16:53Z | |
| dc.date.available | 2026-02-20T01:16:53Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | Given its the potential to replace most of the staple food like rice and corn, cassava (Manihot esculenta Crantz) is one of the most carbohydrates producing crops in the Philippines and the world. One of the process in cassava production is cutting the stalks into planting materials called cassava stakes, therefore, a study was conducted to improve the manual act of cutting cassava into stakes to increase the efficiency and capacity of work. The genetal objective of the study was design, fabricate and evaluate the performance of Cassava Stakes Cutter. Specifically, the study aims to (1) design a cassava stakes cutter, (2) fabricate Cassava Stakes Cutter with the use of locally available material, (3) test and evaluate the performance of the stake cutter produce in terms of the machine's output capacity, efficiency and percent damage; and (4) perform a cost analysis. The machine is has a total dimension of 600mm x 500 mm x 1,000 mm. it was powered by a 1.5 Hp electric motor to facilitate cutting of cassava stalks. The machine has several major parts namely: intel platform, feeding cutting unit, and discharge chute, however, during the course of the fabrication several parts added to improve the machine's ability to cut. The following additions are: Fly wheel, belt tensor and timing sprocket. The machine was tested by cutting cassava stems from Dingalan, Aurora and to further evaluate the machine two factors are considered in evaluation, Cutting Speed (factor A) and Cutting Time (Factor B). Factor A has three levels, 100 rpm, 120 rpm and 140 rpm, while Factor B has two, cut 1 week after harvesting and cut right after harvesting. The experiment was laid in CRD 2x3 Factorial with sources of variation presented in standard ANOVA while comparison among means was tested in LSD at 5% level of significance. The machine shows highest capacity of 3254 stakes/hr when the speed of the cutting unit is at 120 rpm in the stalks right after it was cut while the lowest capacity was recorded when the speed is at 100 rpm in the stalks that is harvest one week after it was harvested, 1252 stalks/hr. Meanwhile, highest efficiency of 90.10% was when the rotational speed of the cutting unit is at 120 rpm in the freshly harvested stalks while the lowest efficiency of 69.94% was attained when the rotational speed of the cutting unit is at 100 rpm in a stalks that is harvested one week before it was cut. In order to further test the machine's functionality the percent damage was taken into consideration the machine the highest percent damage, 30.06% during the time when it runs at 100 rpm and cut stalks that are harvested 1 week before it was cut while it attains lowest percent damage, 9.90%, when the machine cuts stalks right after they were harvested and runs at 120 rpm. The financial viability of the machine was shown in the cost analysis. It states that the machine needed to produce 3384 stalks to break even. The cost surve shows that which only indicates that farmers who produce more than 3384 stalks can buy or rent the machine but it wouldn't be practical to buy the machine if the farmer only needs less than 3384 stalks per year simply because the cost of operating outweighs the profit. | |
| dc.identifier.uri | http://granarium.clsu.edu.ph/handle/123456789/970 | |
| dc.language.iso | en_US | |
| dc.relation.supervisor | MARLON &. GALAD, M.Sc. | |
| dc.title | Design, fabrication and performance evaluation of cassava stakes cutter [manuscript] | |
| dc.type | Thesis |