Nirajkumar Mehta

Due to rapid research in the electronics industry, including a dramatic increase in chip densities and power densities, as well as a continuous decrease in physical dimensions of electronic packages, thermal management is, and will continue to be, one of the most critical areas in electronic product development. It will have a significant impact on the cost, overall design, reliability and performance. The present trend in the electronics industry is to reduce the size and increase the performance of the equipment. The cooling rate of the modern electronic component is one of the prime areas for the application of thermal control techniques. In the present book, the effect of various shapes of cross sections of fins on the motherboard is studied keeping the inlet air velocity, the temperature of the ambient and the heat generation constant. Finite Element Analysis is done to get heat transfer and temperature distribution. This book will be useful for researchers doing research on computational heat transfer specifically for the electronics industry.

Questo libro fornisce consigli passo dopo passo per convertire una macchina tradizionale a tornio in una macchina a controllo numerico. Al giorno d'oggi, i prodotti possono essere realizzati grazie alla moderna tecnologia, che utilizza software e hardware nelle industrie. auspicabile utilizzare macchine CNC per ottenere dimensioni pi precise e produrre forme irregolari. possibile convertire un tornio convenzionale in una macchina CNC mediante un'operazione di retrofit. Per lo sviluppo e la trasformazione in tornio automatico CNC sono necessarie tre parti: meccanica, elettronica e idraulica. Nel presente lavoro, abbiamo convertito un tornio convenzionale in un tornio automatico a controllo numerico, considerando il fattore costo come limite del lavoro. In questo lavoro di indagine basato su esperimenti, abbiamo sostituito diversi componenti del tornio convenzionale con altri componenti di valore e collegato parti elettroniche significative. Pertanto, tutte le operazioni possono essere eseguite dal controllore. Di conseguenza, il tempo di lavorazione pu essere ridotto e il tasso di produzione pu essere aumentato. Questo libro si rivolge agli operatori delle piccole industrie e agli studenti.

Ce livre fournit des recommandations tape par tape pour convertir un tour traditionnel en machine CNC. De nos jours, les produits peuvent tre fabriqu s gr ce la technologie moderne, qui utilise des logiciels et du mat riel informatique dans les industries. Il est souhaitable d'utiliser une machine CNC pour obtenir des dimensions plus pr cises et produire des formes irr guli res. Il est possible de convertir un tour conventionnel en machine CNC en le modernisant. Le d veloppement et la transformation d'un tour automatique CNC n cessitent trois parties: m canique, lectronique et hydraulique. Dans le pr sent travail, nous avons converti un tour conventionnel en un tour automatique CNC en consid rant le facteur co t comme une limitation du travail. Dans ce travail d'investigation bas sur l'exp rimentation, nous avons remplac plusieurs composants du tour conventionnel par d'autres composants de valeur et nous avons connect des pi ces lectroniques importantes. Par cons quent, toutes les op rations peuvent tre effectu es par le contr leur. Par cons quent, le temps d'usinage peut tre r duit et le taux de production peut tre augment . Ce livre s'adresse aux op rateurs des petites industries et aux tudiants.

Dieses Buch enth lt schrittweise Empfehlungen zur Umwandlung einer herk mmlichen Drehmaschine in eine CNC-Maschine. Heutzutage k nnen Produkte mithilfe moderner Technologie hergestellt werden, die Computersoftware und -hardware in der Industrie einsetzt. Es ist w nschenswert, eine CNC-Maschine zu verwenden, um genauere Abmessungen zu erhalten und unregelm ige Formen herzustellen. Es ist denkbar, die konventionelle Drehmaschine durch Nachr stung in eine CNC-Maschine umzuwandeln. F r die Entwicklung und Umwandlung in eine CNC-Drehmaschine sind drei Teile erforderlich: Mechanik, Elektronik und Hydraulik. In der vorliegenden Arbeit haben wir eine konventionelle Drehmaschine in eine automatische CNC-Drehmaschine umgewandelt, wobei der Kostenfaktor als Einschr nkung der Arbeit ber cksichtigt wurde. In dieser experimentellen Untersuchung haben wir mehrere Komponenten der konventionellen Drehmaschine durch andere wertvolle Komponenten ersetzt und wichtige Elektronikteile angeschlossen. Daher k nnen alle Vorg nge ber eine Steuerung ausgef hrt werden. Dadurch kann die Bearbeitungszeit reduziert und die Produktionsrate erh ht werden. Dieses Buch richtet sich an Bediener aus kleinen Industriebetrieben und an Studierende.

Este livro fornece recomenda es passo a passo para converter uma m quina de torno tradicional numa m quina CNC. Atualmente, os produtos podem ser fabricados atrav s da tecnologia moderna, que utiliza software e hardware inform ticos nas ind strias. desej vel utilizar a m quina CNC para obter dimens es mais exactas e produzir formas irregulares. poss vel converter a m quina de torno convencional numa m quina CNC atrav s de uma adapta o. Para desenvolver e transformar uma m quina de torno autom tica CNC, s o necess rias tr s partes: mec nica, eletr nica e hidr ulica. No presente trabalho, convertemos o torno convencional em torno autom tico CNC, considerando o fator custo como limita o do trabalho. Neste trabalho de investiga o baseado em experi ncias, substitu mos v rios componentes do torno convencional por outros componentes de valor e lig mos pe as electr nicas significativas. Assim, todas as opera es podem ser efectuadas pelo controlador. Assim, o tempo de maquinagem pode ser reduzido e a taxa de produ o pode ser aumentada. Este livro destina-se a operadores de ind strias de pequena dimens o e a estudantes.

Thermal Fatigue Failure is the most critical problem associated with any equipment working under heating and cooling cycles. Here, we have taken a case of Induction Furnace Wall and developed an Algorithm to predict life cycle. A probability concept is utilized in the prediction of life cycle to justify the miscellaneous factors effected for the damage of the induction furnace wall. An empirical correlation is developed by rational analysis which can directly predict the life cycle of the induction furnace wall for any refractory material and any size of furnace. Various dimensionless numbers are developed using different quantities which effect the life cycle of induction furnace wall using dimensional analysis. Then rational analysis is done for finding out exact correlation using experimental data available from industries. This is a very innovative research work as it will open up innovative gateways for thermal fatigue life prediction field. This empirical correlation can be even modified and tailored to solve many different thermal fatigue problems.