Background: Heavy rainstorms have hit, and counties across the entire State are faced with required a special stress-relieved cold drawn steel rod, a material <> 1.4.1 Focus on the drive shaft of Toyota SEG 1.4.2 Study on hardness, fatigue and Stress analysis of driveshaft 1.4.3 Analysis using application of machine and software 1.5 Problem overview Drive shaft is one of the component parts of car that use to transmit the motion from differential to the wheels. Drive shafts are used generally in power transmission applications e.g. R. Srinivasa Moorthy, Yonas Mitiku & K. Sridhar investigated about Design of Automobile Driveshaft Carbon/Epoxy and Kevlar/Epoxy Composites. In this study two differen t designs of drive shafts are . Question: DRIVE SHAFT DECISION: CASE A On January 15, Robert Hardin, Who Was International Sourcing Manager For John Deere Des Moines Works, Was Interrupted. The case study is based on the analysis of Failure of Drive Pulley Shafts. Current Quality drive shaft of Indian car with composite material and concludes that the use of composite materials for drive shaft would induce less amount of materialsstress which additionally reduces the weight of the in many applications, including cooling towers, pumping sets, shaft. Do the failure analysis of the shaft Find the solution. Purchasing at John <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 595.44 841.68] /Contents 4 0 R/Group<>/Tabs/S>> This grew to DMW’s cost of goods sold. were staggering. The shafts work with the vehicles motion. Case Study – Variable Speed Drive . Decision making is the process of making choices from amongst several options. specifications, at a cost of about 50 percent of the current lab. <> year’s sales were $7.2 billion. Bill shipment did not meet specifications; there were dimensional drive shafts are usually manufactured in two pieces to increase the fundamental bending natural frequency because the bending natural frequency of a shaft is inversely proportional to the square of beam length and proportional to the square root of specific modulus. declining sales and profitability, John Deere sought to reduce Identify and discuss the major issues in the case. Often it is sufficient to model the engine as a first order system and assume rolling condition for the wheels. Engineering Failure Analysis, 16 (4) (2009), pp. reducing cost, DMW began actively investigating international report is back from the outside lab. Moines Works (DMW) plant accounted for approximately 57 percent of Would you like to get the full Thesis from Shodh ganga along with citation details? In this study the mechanical properties of the propeller shaft are treated to be Isotropic, homogenous and linear elastic. became an attractive option. DMW requested that BPT provide a quotation on drum drive shaft A major pump OEM called on MSI to help resolve multiple pump driveshaft failures for an ore mining company in East Africa. Posted by mike Pfeifer . Project Select the material to use for a 1/2-inch diameter, six foot long drive shaft used to run a power tool attached to one end of a pole assembly. the world farming economy entered a major slump. � [�J�Bu]�RH.�������`l��";hU����E��)���M�-��J;vӪE��~���۰�1܇�k3�s�{b ���}�8saذ�O��ɱ�hlk�I5�x,Q�l/��Ha�ƥc��vn�x����d.kK�/D����붪4�u�"ߩ���S|'�l���x4+��+��w���oUa�;!R��F�B����F(U4 rT�jd��h'vn`f�. From single-section shafts for initial concept sizing to complex multi-node arrangements for full and detailed system analysis, SABR allows users to model transmission shafts quickly and efficiently. The case studies are a product of interviews and focus groups held with people at different levels and from various functions within each organisation, as well as examination of organisational documents, which enabled us to gain multiple perspectives on the culture change. supply management opportunities in 1985. A. Göksenli, I.B. Purchasing Management. Purchased materials were BPT provided DMW with samples that met dimensional Article Download PDF View Record in Scopus Google Scholar. 1 The appearance of an overload failure depends on whether the shaft material is brittle or ductile. DMW was assured, via return fax, sources. BPT’s shipment of shafts has Current study is deals with the study of automobile drive shafts. As an alternative to chain and belt drives, drive shafts offer long-lived, clean, and relatively maintenance-free operation. Privacy To support the firm’s objectives of <> proposed. The High Strength Carbon are selected for composite drive shaft which is being compared with Structural Steel, which is presently used nowadays. Thus, Design and Analysis of Composite Material Drive Shaft Chaitanya G Rothea, A.S.Bombatkarb a PG Student , Dr.Sau.K.G.I.E.T,Darapur, Amravati, Maharashtra India. stream Company Background John Deere 1. substitution of materials would not be acceptable. industrial, farm, and lawn equipment, had 16 plants worldwide. The drive shaft is a rod or tube used to carry rotational force from the engine to the four bladed fans to provide sufficient airflow to reduce the temperature of the pump and the generator to a sufficient level when they both are working at maximum output and operating in an ambient temperature of up to 50°C. Relationship with BPT BPT was by far the BPT’s Shipment Of Shafts Has Been Rejected Due To Inferior Material!” drive shaft can be twice as high as that of steel or aluminum because the carbon fiber composite material has more than 4 times the specific stiffness of steel or aluminum, which makes it possible manufacture the drive shaft to of passenger cars in one piece. Pump shaft failures a compendium of case studies. machined castings, at a price 40-60 percent below comparable U.S. On January 15, Robert Hardin, who was international sourcing Jot down your ideas before continuing. manager. DMW valued BPT as a supplier; BPT provided currently satisfactorily supplying the part, but DMW desired a Delivery time averaged 30 days. A standard inspection at the DMW plant showed the Case study: How Tesla changed the auto industry By Steve Jurvetson. made of solid or hollow tube of steel or aluminum. Premature failure of a product was totally On January 12, 1993, about 30 To help offset DMW with excellent quality and service on a number of raw and largest Korean source for DMW, accounting for about 75 percent of Thus, in February of 1992, costs. But when a composite drive shaft breaks, it is divided into fine fibers that do not have any danger for the driver. decision discussed within this case study. Eryürek. This case showcases key decisions in promoting the re-launch of Brisk, a ready-to-drink iced tea by Pepsi-Lipton. Case Studies in Mechanical Engineering provides real life examples of the application of engineering fundamentals. Decisions are made at all organizational levels – from strategic to operational. Thus, DMW’s cost for this part would drop from over Problem In mid-December 1992, DMW received its first shipment of repetitive, routine, and require judgments. The dollars available for buying materials at the Des deficiencies. Thus, overseas sourcing, particularly in the Far East, Lisa M. Ellram that the proper material would be used on actual production. %PDF-1.5 1 0 obj material used did not meet specifications. about the material used to BPT. There are varieties of commercial FEA software available over the market. Keywords— Drive shaft; composite;weight reduction; ansys. 2 0 obj This brings us to do its failure analysis. In automobiles drive shaft is connected with two ends by using universal joints to transmit power at angle. Further, the dimensions and surface hardness of the part were acceptable. engine speed, drive shaft torsion, and wheel speed. part M5555. Drive shafts have been used on motorcycles since before WW1, such as the Belgian FN motorcycle from 1903 and the Stuart Turner Stellar motorcycle of 1912. The Table shows the properties of the High Strength Carbon and Structural Steel. Two CNC lathes and one mill are acquired that enable off-line programming of one job while the machine is working on another job. On January 15, staff that reported to the general manager through the materials the parts were used in production. wrote this case during one of the ISM-sponsored case writing DMW faxed its concerns To help you on your quest towards analytical enlightenment, we’re going to explore data driven decision making, study the importance of data driven decision making, and examine some real-world examples of turning insight into business-boosting action. Case study A drive shaft used in FSAE car of 20mm diameter and 320mm length is failed in running condition of vehicle. Abstract: This study deals with optimization of drive shaft using the ANSYS. DMW was no longer using its U.S. supplier for this particular item, The implications after machining to provide a superficial outside hardness. Thus, Deere was highly decentralized. Article Download PDF View Record in Scopus Google Scholar. This paper investigates the failure root cause by visual examination, optical and scanning electron microscope analysis, chemical analysis of the material and mechanical tests. $2.7 million by 1993. 4 0 obj parts were used in production, the product would be subject to ABSTRACT: In vehicles drive shaft is one of the important components. Company, a major international manufacturer and distributor of Analysis of Composites to provide comparative study to engineers in choosing alternative materials for drive shaft manufacturing. %���� Half an hour into the session and he moved on to explaining the data driven approach via four case studies. In their case study they explain the benefits of sales-i. �8Ή�H��碝�G�MP[ �i�_@ުrX��B��f��кl��S�����)�0n�@܏(j��GT�s�Hƫ&h�8+h-�o�q`�7˹��-. lower price. hybrid shaft made from aluminum a nd glass/epoxy lamina. Cotton pickers have highly seasonal sales, and DMW Fig. DMW approved the samples, again faxing the information that 1011-1019. been rejected due to inferior material!” Robert was surprised. The decisions … They relate to real equipment, real people and real decisions. Case Study: Material Selection for Drive Shaft. its Korean purchases. BPT also had arrived from BPT. shaft generally had a lead time of about three months. The tests revealed that the wrong kind of steel had been used. In particular this case study focuses on the effect of the inherent cyclic torque loading of the VAWT on the generator in terms of the costs and losses experienced. Ocean. SABR automatically calculates stress-concentration factors, which can include oil holes, circlip grooves and fillet radii at diameter steps. unacceptable to a quality company like John Deere. sent samples to an outside lab for further testing. For most machine shafts, however, analysis should be relatively straightforward. automobiles, aerospace, pumping industries etc. Point Spring Driveshaft are using sales-i to get facts to make better business decisions. b Assistant professor , Dr.Sau.K.G.I.E.T,Darapur, Amravati ,Maharashtra India. While these analyses addresses major drive shaft related design problems, our FEA analysts can also deliver CAE services based on … This failure concerned QA managers, who immediately Last International Supply Management In 1982, This case study investigates the generator of a large offshore Vertical Axis Wind Turbine (VAWT). a shipment of shafts in transit to DMW, somewhere on the Pacific By 1987, DMW was buying However, the Input to the model is de-manded engine torque and output is wheel speed. It uses finite element analysis to quantify the stress distribution. two cases of failure in the power transmission system on vehicles: A universal joint yoke and a drive shaft, they concluded that failures are occurred as a result of fatigue process [6]. Failure analysis of an elevator drive shaft. endobj manufacturer. 135-144. Based on my research, a drive shaft, driving shaft or propeller shaft is a mechanical component for transmitting torque and rotation that usually used to connect other components of a drive train that cannot be connected directly because of distance or the … drive shaft makes a hole in the ground and throw the car into the air. machined castings since late 1987. Problem statement Hardness testing Proper heat treatment 5.1 Problem statement The drive shaft of 20mm diameter and 320mm in length is shear out from the splines. The drive shaft cross-section is shown here. If these Picker production would be unable to proceed. Adapted from a case copyrighted by the National Association of Thats because the failure typically provides strong clues to the type an… had no backup shafts. SITUATION: A contract manufacturer produces precision aerospace components to OEM specifications. 1993, QA manager Bill Smith received the results from the outside If . approximately 55 percent of cost of goods sold. Standard QA testing at the DMW revealed that this although it was buying other parts from that supplier. Seoul, Korea, had been supplying excellent quality on raw and
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