Authors

Abstract

When designing appropriate machinery systems, equipment, and infrastructures for interacting with, cultivating, gathering, and agriculture-related processing, it is required to have an understanding of the engineering characteristics of agricultural products. This unpredictability makes it difficult to design or develop machines that can efficiently and effectively manage a wide range of product characteristics. Experimental analysis was used to accomplish the study's objective, which was to investigate the implications of variation on the physical characteristics and frictional parameters of common beans (Phaseolus vulgaris L.) concerning the design of the threshing machine. One hundred bean seeds from each variety were randomly selected and their three primary dimensions were measured with a digital vernier caliper (least count 0.01 mm) and a micro-screw gauge in order to determine the dimensional parameters. The remaining parameters (elongation at the width, thickness, and vertical orientation, geometrical mean diameter, arithmetic mean diameter, square mean diameter, equivalent mean diameter, roundness, sphericity, flakiness ratio, aspect ratio, cross-sectional area, projected area, transverse surface area, and the seed volume) were calculated using mathematical models. Gravimetric characteristics true density and seed volumes were calculated using the toluene displacement method. The data were subjected to analysis of variance (ANOVA), and the Duncan multiple range test was used to separate the means. Significance was accepted at 95% confidence interval (p< 0.05).The results data are required for predicting loads in agricultural storage structures, and to establish useful sources for the development of machinery for handling, cleaning, storing, transporting and drying, among other things.

Abstract in Amharic

ከግብርና ጋር ለተያያዙ ግንኙነቶች፣ ለማልማት፣ ለመሰብሰብ እና ለማቀነባበር ተስማሚ የሆኑ የማሽን ስርዓቶችን፣ መሳሪያዎች እና መሠረተ ልማቶችን ሲነድፉ። ይህ ያልተጠበቀ ሁኔታ ብዙ የምርት ባህሪያትን በብቃት እና በብቃት ማስተዳደር የሚችሉ ማሽኖችን ለመንደፍ ወይም ለማምረት አስቸጋሪ ያደርገዋል. የሙከራ ትንታኔው የአውድማ ማሽኑን ዲዛይን በሚመለከት የቦሎቄ (Phaseolus vulgaris L.) አካላዊ ባህሪያት እና የግጭት መለኪያዎች ላይ ያለውን ልዩነት ለመመርመር ጥቅም ላይ ውሏል። የአካላዊ መመዘኛዎች አማካኝ ዋጋዎች የሚወሰኑት የሙከራ መረጃን በመተንተን ነው: ርዝመት (11.282 ± 0.995 ሚሜ); ስፋት (7.24 ± 0.673 ሚሜ); ውፍረት (5.67 ± 0.794 ሚሜ); ስፋት ማራዘም (1.566 ± 0.136 ሚሜ); ውፍረት (2.037 ± 0.282mm) ማራዘም; ቀጥ ያለ ማራዘም (1,301 ± 0,152 ሚሜ); አርቲሜቲክ አማካኝ ዲያሜትር (8.064 ± 0.688mm); የጂኦሜትሪክ አማካይ ዲያሜትር (7.715 ± 0.698mm); ካሬ አማካኝ ዲያሜትር (13,646 ± 1,195 ሚሜ); ተመጣጣኝ አማካይ ዲያሜትር (9,808 ± 0,859 ሚሜ); ክብ ቅርጽ (0.644 ± 0.056); ሉል (0.685 ± 0.044); የፍላሽነት መጠን (0.784 ± 0.092); ምጥጥነ ገጽታ (0.643 ± 0.053); የመስቀለኛ ክፍል (154,477 ± 26,002mm2); የታቀደው ቦታ (64,508 ± 10,377mm2); ተሻጋሪ የወለል ስፋት (32,546 ± 6,683mm2); እና የዘር መጠን (241,744 ± 0.207mm3), በቅደም ተከተል. የተቦረቦረ ሉህ ወለል የማይንቀሳቀስ ኮፊፊሸንት ከፍተኛውን የማይንቀሳቀሱ የግጭት ውህዶች ያሳያል፣ ከዚያም ጎማ፣ ፕላስቲክ፣ ፕላይ እንጨት፣ መስታወት፣ አሉሚኒየም፣ አንቀሳቅሷል ብረት፣ ባለቀለም ሉህ፣ አይዝጌ ብረት እና የብረት ንጣፍ ንጣፎች። እነዚህ መረጃዎች የሚፈለጉት በግብርና ማከማቻ መዋቅሮች ውስጥ ያሉ ሸክሞችን ለመተንበይ ብቻ ሳይሆን ለሌሎች ነገሮች አያያዝ፣ ጽዳት፣ ማከማቻ፣ ማጓጓዣ እና ማድረቂያ ማሽነሪዎች ልማት ጠቃሚ ምንጮችን ለማቋቋም ነው።