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Mechanical Design by Antonino Risitano
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Mechanical Design by Antonino Risitano

PREFACE to Mechanical Design by Antonino Risitano book

This collection is the result of a decade of continual elaboration and revision of teaching notes at the earnest request of students of the machine construction course that has been run for several years now at the Faculty of Engineering of the University of Catania for mechanical engineering students.

Beginning with current training needs, the various parts of the book’s arguments are dealt with in such a way as to be accessible to all students of courses in industrial engineering.

The goal and the hope are that this collection of notes can be used not only by students of the mechanical engineering course but by all those whose training requires them to acquire the fundamentals of the design of mechanical components.

For this course, the textbooks have always been written by Prof. R. Giovannozzi, (the “maestro”), and the review of notes served mainly to help students get the most out of the texts, supporting them above all in those areas where, by experience, they have the most difficulty.

Furthermore, the notes have also served to shorten study time, an important contribution given the requirements of the new teaching regulations.

I have always used Prof. Giovannozzi’s texts for reference, because of all the sources consulted, although some inspired me (particularly those by American authors), his proved the most complete in dealing with these subjects; they remain excellent texts, and are certainly stimulating for students.

The approach and methodology continue to be extremely valid, and in my opinion cannot be replaced by those proposed in other texts.

The analytical approach to the subjects is still based on algorithms from traditional calculus without reference to more current methodologies, which, however, students do come across in other courses.

This choice was made so as not to deprive students of the ability to use simple models and calculations that are reliably effective and helpful at times when more complicated algorithms or well-known commercial programs need to be used.

The aim is still to induce students to be logical, starting by analyzing the physical problem with the most appropriate schematic, and ending with a constructional definition of the component in need of planning.

To guarantee due completeness of subject requirements, it was considered essential on occasion to add references to current norms, or more advanced approaches to calculation (e.g., cogwheel resistance tests, lubrication theory, brake measuring) wherever necessary, compared to the text references.

In such cases, however, the calculations suggested in Giovannozzi’s text are side-by-side with those obtained by the most recent methods so that students can compare. Often, construction details in the maestro’s texts are still quite rightly valid references today.

To comply with the requirements of the new teaching regulations, the principal materials tests and simple stress states are outlined prior to the study of fatigue, which refers to fine-tuning methods developed at Catania’s Faculty of Engineering.

The hope is that other industrial engineering students—not just the mechanical engineers—can thus benefit from the teachings and procedures of the maestro.

Typical machine construction course subjects/modules occupy the greater part of this Mechanical Design by Antonino Risitano book (mechanical system component planning), but two preliminary sections enhance its appeal: the methodological set-up of the project (traditional or more recent), and the project criteria that take into account the environment.

These two parts are echoed in a work published in the U.S. authored by myself, together with Prof. G. La Rosa and Ing. F. Giudice, who have collaborated in editing that work.

Finally, as mentioned above, this work should be seen as a collection of notes on lessons conducted by the author and inspired by Giovannozzi’s book, without which the notes are inadequate.

“The intelligence of the reader” in using the collection, as the maestro often said, might allow all that is contained in the Giovannozzi manual to conform to current—above all professional—needs.

A case study in which theoretical methods and tools are applied to the planning of real mechanical systems is reported.

Since there is always room for improvement, we welcome suggestions from our readership. Please address these to the author at [email protected]

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