This study investigates some of the basic dynamic problems in the use of handsaws in industry. As the main purpose in bandsaw study is to understand and improve the cutting performance of the sawblade, this study emphasizes those dynamic problems that most affect the sawblade performance. These include the bandsaw structural dynamics, the top wheel dynamics, the global behavior of sawblades, and the washboarding problem in cutting. The study of bandsaw structural dynamics investigates the possible structural modes affecting the performance of the sawblade. Three structural modes within a frequency range of interest from 0 to 60 Hz were found and analyzed. The corresponding critical structural elements are indentified. The role of top wheel straining mechanism in bandsawing is discussed in the study of top wheel dynamics. Top wheel displacement during cutting and its effect on the performance of the sawblade are also investigated. The causes of top wheel displacement are the speed change of handsaws and temperature rise of the sawblades. In the global behavior of sawblades, the sawblade between the guides is modelled as a narrow, axially moving, thin beam with end loading. The Euler's equation of motion is developed by applying Hamilton's Principle to the model. A simplified finite element method by using a modified cubic beam element is used to solve the eigenproblem. These results are verified by tests with an idling sawblade. A finite element approach capable of calculating the natural frequencies and mode shapes is obtained. The washboarding phenomenon is investigated. Extensive experimental results are obtained and an analysis of the resulting washboarding is presented. Two types of wash-boarding have been observed and identified with the tooth impacting problem and the chatter vibration problem. The results of this study will be of interest to those who wish to improve their understanding of the dynamic behaviors of bandsaws and also to improve the performances of handsaws. / Applied Science, Faculty of / Mechanical Engineering, Department of / Graduate

Thesis (D.M.A.)--Boston University.

This study traces the development of the baton conductor from his earliest origin up to and including the present day. From his initial role, that of a time beater and teacher, he has progressed to that of an interpreter and creator of music.

A set of variations can be any length and contain any number of variations. The same set of variations also can be fashioned to resemble any musical form. On this basic premise, Theme and Variations for Wind Ensemble was written. It is a continuous one movement composition. There is a statement of a theme with five subsequent variations.

Primarily the objective was to compose a piece for concert band in a large form with the ultimate aim of submitting the number for publication for perfromance by a college, or good high school band, with the additional hope this number might eventually be included on a high school band contest list. With the thought of publication in mind, it was necessary to cross-cue certain parts and limit the technical scope of the composition.

"Concerto for Band" is a one movement composition approximately seven minutes in length. It consists of several smaller sections which are distinguished mainly by tempo. The instrumentation of the piece is piccolo; flute; oboe; 1st, 2nd and 3rd trumpets; 1st, 2nd, 3rd, and 4th horns; 1st, 2nd, and 3rd trombones; euphonium; tuba and a percussion section of even players which includes a triangle, tenor drum, snare drum, bass drum, timpani, chimes, orchestra bells, xylophone, marimba, suspended cymbal, crash cymbals, temple blocks, tambourine, claves, and sandpaper blocks.

The problem for this study is a transcription for band of the first movement of Schubert's Symphony in B-flat Major. In the arrangement of the data, the discussions are presented before the transcription. This procedure was followed in order that the transcription might be readily understood.

The problem of this study was to make a transcription of Lincoln Portrait for symphonic band. There is a drastic need for music of a better quality and music by modern composers for symphonic band.The problems of this study concern the following major phases: first, the instrumentation of the work;second an analysis from the point of view of the problem; third, a band transcription of Lincoln Portrait for symphonic band.

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