Ashish Gohil

• Ph.D.(Mechanical)
• Professor (Assistant) at Nirma University

In the recent past, ultrasonic vibration-assisted single-point incremental forming has gained the attention of the metal forming researchers’ interest. Being a latest development, the process is not completely established from the point of view of the underlying mechanism and the effect of the process variables on the formability of the component....

Incremental sheet forming process has developed the interest of researchers in the field of sheet metal forming due to high formability and capability to produce prototypes of new products at low cost and minimum lead time. Research work is going on in various front to enhance the process capabilities so that it can be explored for commercial produ...

Incremental sheet forming is one of the latest processes in sheet metal forming industry which has drawn attention of various researchers. It has shown improved formability compared to stamping process. Single Point Incremental Forming (SPIF) process requires only hemispherical tool and no die is required hence, it is a die-less forming process. In...

Incremental Sheet Forming is a novel sheet metal forming technology which is gaining widespread acceptance as rapid prototyping technology for sheet metal components. Single Point Incremental Forming (SPIF) and Two Point Incremental Forming (TPIF) are the two main variants of the process. Single Point Incremental Forming has drawn attention of the...

Multiplication is one of the most elementary mathematical operation. For multiplication of two numbers, different methods of multiplication have been developed over a period of time. Modern method of multipli- cation allows multiplication of two numbers having p digits. Simultan- uous multiplication of 3 or higher numbers is considered infeasible a...

Nozzle is a device designed to control the direction or characteristics of fluid (especially to increase velocity) as it exits (or enters) an enclosed chamber or pipe. Under different loading conditions, the stress will occur at the nozzle to head or shell junction area. Thus reliable and accurate design calculation for head or shell to nozzle junc...

This paper illustrates productivity and quality improvement through Total Productive Maintenance implementation. It is the method to improve the productivity of a manufacturing firm by reducing and/or eliminating waste by continuous attention to the machine and process. Monthly data available from foundry is analyzed. Pareto analysis is carried out...

This paper presents the scheme for calculation of Overall Equipment Effectiveness (OEE) of a foundry. The proposed methodology measures the performance of manufacturing system and gives an indication of foundry performance. This OEE measure can be used as the measure of improvement of the system and also to decide the success of implementing Total...

The design of pressure vessel is usually made with external attachments and required openings. The most commonly external attachments are the nozzles with their junctions. Under different loading conditions the stress concentration will occur at the junction area. In addition, due to discontinuity of the geometry and difficulties during welding and...

Number of management techniques has been developed over the years to manage the manufacturing. Waste of time, energy, money and overworked staff are common issues faced by any manufacturing company. Overall Equipment Effectiveness is a novel technique to measure the effectiveness of a machine and it truly reduces complex production problems into si...

Quality and Maintenance of manufacturing systems are closely related functions of any organization. Over a period of time two concepts have emerged which are Total Productive Maintenance (TPM) and Total Quality Management (TQM) along with other concepts to achieve World Class Manufacturing system. In this paper experience of implementing Total Prod...

Hydraulic Modular Trailer (HMT) is one of the safest way to transport heavy and over dimensional objects on road. Gross laden weight of HMT is fixed based on permitted load per axle as per standards. To have higher pay load capacity, un-laden weight of the HMT should be optimum. Major load (un-laden) of the HMT is shared by the frame hence weight o...

Formation of the machine cell and part family is the first step to be taken for implementation of cellular manufacturing concept. Cell formation is the first and most important step in successful implementation of cellular manufacturing. In this paper, Cross weightage is defined and proposed as the new decision parameter to place the rows and colum...

Bridge Girder which carries various dead loads and live load is heavily stressed part of Crane structure. Along with the strength it should provide sufficient rigidity to maintain the proper and safe movement of the load. Failure to sustain the load while in operation could lead to loss of material and in worst case persons working nearby the crane...

Crane structure, which is made up of bridge girder and end truck, contributes heavily to the dead weight of the whole crane. Most of the materials handling equipment manufacturing industries are manufacturing equipment using conventional design procedure, which gives heavy weight of crane structure and other parts. Moreover, for the different capac...