Angebote zu "Townsend" (6 Treffer)

Kategorien

Shops

A Contribution to Enlarge the Application Limit...
40,10 € *
ggf. zzgl. Versand

The design of a component and its durability can be improved and assured to a great degree by means of a specific setting of its residual stress state. This is referred to as stress engineering. Prime examples of this are gear wheels (Townsend 1992, Krug 2005), which are usually case-hardened or nitrided and shot peened, particularly at working surfaces and depth of teeth. As a consequence, compressive residual stress depth distributions are introduced in the surface layer, frequently at geometrically complex regions. Such types of residual stresses play a key role in terms of preventing crack growth and reating a lightweight design. If this surface treatment is not applied, the gear wheels experience damage after a number of load cycles. Similar statements can be made for turbine blades and crankshafts, which exhibit complex geometries as well. These machined components are usually shot peened at the blade roots (Feldmann 2012) or deep rolled at the fillets, respectively (Haibach 1982). In this respect, it is necessary to develop reliable measurement methods which are capable of determining residual stress states qualitatively and quantitatively during manufacturing processes and over the lifetime of components. Residual stresses usually vary in their penetration depth with more or less steep gradients that are frequently multi-axial and change their orientation. Since residual stress states can be very complex, the demands for precise measurement methods are high. This study is a good example of appraisal of RS results with a critical eye, particularly for comparisons between measurement methods that differ from their physical principles and from their specific boundary conditions.

Anbieter: Dodax AT
Stand: 23.01.2020
Zum Angebot
A Contribution to Enlarge the Application Limit...
22,00 CHF *
ggf. zzgl. Versand

The design of a component and its durability can be improved and assured to a great degree by means of a specific setting of its residual stress state. This is referred to as stress engineering. Prime examples of this are gear wheels (Townsend 1992, Krug 2005), which are usually case-hardened or nitrided and shot peened, particularly at working surfaces and depth of teeth. As a consequence, compressive residual stress depth distributions are introduced in the surface layer, frequently at geometrically complex regions. Such types of residual stresses play a key role in terms of preventing crack growth and creating a lightweight design. If this surface treatment is not applied, the gear wheels experience damage after a number of load cycles. Similar statements can be made for turbine blades and crankshafts, which exhibit complex geometries as well. These machined components are usually shot peened at the blade roots (Feldmann 2012) or deep rolled at the fillets, respectively (Haibach 1982). In this respect, it is necessary to develop reliable measurement methods which are capable of determining residual stress states qualitatively and quantitatively during manufacturing processes and over the lifetime of components. Residual stresses usually vary in their penetration depth with more or less steep gradients that are frequently multi-axial and change their orientation. Since residual stress states can be very complex, the demands for precise measurement methods are high.

Anbieter: Orell Fuessli CH
Stand: 23.01.2020
Zum Angebot
Northwestern Indian Fights and Fighters: Chief ...
3,00 CHF *
ggf. zzgl. Versand

'Northwestern Indian Fights and Fighters: Chief Joseph and the Nez Perce War & Captain Jack and the Modoc War' by Cyrus Townsend Brady is a history that covers the two most famous Indian Wars of the Northwest----The Nez Pearce War and the Modoc War---in the 1870s. Cyrus Townsend Brady (1861-1920) was an Episcopal clergyman and historian as well as a novelist. He was graduated from the U.S. Naval Academy in 1883. In 1889, he was ordained a deacon in the Episcopal church and was ordained a priest in 1890. Brady published over 70 novels, all with an accurate historical basis, many of them based on incidents and historical figures in American history. He also published non fiction histories in a series called 'Fights And Fighters.' He used many primary sources such as diaries, letters, and journals, both published and unpublished, which made him unusual for popular history authors of his time. He also wrote in clear, simple language that made his books popular; unlike the stuffy verbose prose of the professional historian of his day. This book, 'Northwestern Indian Fights and Fighters: Chief Joseph and the Nez Perce War & Captain Jack and the Modoc War' deals with two of the most famous Indian Wars of the 1870's; that of the Nez Perce and their famous Chief Joseph and the Modoc War led by a Chief called Captain Jack due to his dress in cast off army clothing. Brady does an unusual thing in writing this history. In the first chapter of each history he gives the historians view of the conflict and the course of each war from beginning to end. He then incorporates the writings on each subject by actual eyewitness participants in each war. In this way he adds muscle and sinew to his skeleton of the wars' events. This treatment gives a more complete view of the subject than either the straight historical treatment of the sometimes conflicting view of the participant. A must-read for those interested in the Indian Wars of the 19th Century. This e-book contains the illustrations Brady used in the original volume. There are approximately 107,000+ words and approximately 356 pages at 300 words per page in this e-book. NOTE: This book has been scanned then OCR (Optical Character Recognition) has been applied to turn the scanned page images back into editable text. Then every effort has been made to correct typos, spelling, and to eliminate stray marks picked up by the OCR program. The original and/or extra period images, if any, were then placed in the appropriate place and, finally, the file was formatted for the e-book criteria of the site. This means that the text CAN be re-sized, searches performed, & bookmarks added, unlike some other e-books that are only scanned---errors, stray marks, and all. We have added an Interactive Table of Contents & an Interactive List of Illustrations if any were present in the original. This means that the reader can click on the links in the Table of Contents or the List of Illustrations & be instantly transported to that chapter or illustration. Our aim is to provide the reader AND the collector with long out-of-print (OOP) classic books at realistic prices. If you load your mobile device(s) with our books, not only will you have fingertip access to a large library of antiquarian and out-of-print material at reasonable prices, but you can mark them up electronically & always have them for immediate reference without worrying about damage or loss to expensive bound copies. We will be adding to our titles regularly, look for our offerings on your favorite e-book site.

Anbieter: Orell Fuessli CH
Stand: 23.01.2020
Zum Angebot
A Contribution to Enlarge the Application Limit...
20,00 € *
ggf. zzgl. Versand

The design of a component and its durability can be improved and assured to a great degree by means of a specific setting of its residual stress state. This is referred to as stress engineering. Prime examples of this are gear wheels (Townsend 1992, Krug 2005), which are usually case-hardened or nitrided and shot peened, particularly at working surfaces and depth of teeth. As a consequence, compressive residual stress depth distributions are introduced in the surface layer, frequently at geometrically complex regions. Such types of residual stresses play a key role in terms of preventing crack growth and creating a lightweight design. If this surface treatment is not applied, the gear wheels experience damage after a number of load cycles. Similar statements can be made for turbine blades and crankshafts, which exhibit complex geometries as well. These machined components are usually shot peened at the blade roots (Feldmann 2012) or deep rolled at the fillets, respectively (Haibach 1982). In this respect, it is necessary to develop reliable measurement methods which are capable of determining residual stress states qualitatively and quantitatively during manufacturing processes and over the lifetime of components. Residual stresses usually vary in their penetration depth with more or less steep gradients that are frequently multi-axial and change their orientation. Since residual stress states can be very complex, the demands for precise measurement methods are high.

Anbieter: Thalia AT
Stand: 23.01.2020
Zum Angebot
Northwestern Indian Fights and Fighters: Chief ...
2,81 € *
ggf. zzgl. Versand

'Northwestern Indian Fights and Fighters: Chief Joseph and the Nez Perce War & Captain Jack and the Modoc War' by Cyrus Townsend Brady is a history that covers the two most famous Indian Wars of the Northwest----The Nez Pearce War and the Modoc War---in the 1870s. Cyrus Townsend Brady (1861-1920) was an Episcopal clergyman and historian as well as a novelist. He was graduated from the U.S. Naval Academy in 1883. In 1889, he was ordained a deacon in the Episcopal church and was ordained a priest in 1890. Brady published over 70 novels, all with an accurate historical basis, many of them based on incidents and historical figures in American history. He also published non fiction histories in a series called 'Fights And Fighters.' He used many primary sources such as diaries, letters, and journals, both published and unpublished, which made him unusual for popular history authors of his time. He also wrote in clear, simple language that made his books popular; unlike the stuffy verbose prose of the professional historian of his day. This book, 'Northwestern Indian Fights and Fighters: Chief Joseph and the Nez Perce War & Captain Jack and the Modoc War' deals with two of the most famous Indian Wars of the 1870's; that of the Nez Perce and their famous Chief Joseph and the Modoc War led by a Chief called Captain Jack due to his dress in cast off army clothing. Brady does an unusual thing in writing this history. In the first chapter of each history he gives the historians view of the conflict and the course of each war from beginning to end. He then incorporates the writings on each subject by actual eyewitness participants in each war. In this way he adds muscle and sinew to his skeleton of the wars' events. This treatment gives a more complete view of the subject than either the straight historical treatment of the sometimes conflicting view of the participant. A must-read for those interested in the Indian Wars of the 19th Century. This e-book contains the illustrations Brady used in the original volume. There are approximately 107,000+ words and approximately 356 pages at 300 words per page in this e-book. NOTE: This book has been scanned then OCR (Optical Character Recognition) has been applied to turn the scanned page images back into editable text. Then every effort has been made to correct typos, spelling, and to eliminate stray marks picked up by the OCR program. The original and/or extra period images, if any, were then placed in the appropriate place and, finally, the file was formatted for the e-book criteria of the site. This means that the text CAN be re-sized, searches performed, & bookmarks added, unlike some other e-books that are only scanned---errors, stray marks, and all. We have added an Interactive Table of Contents & an Interactive List of Illustrations if any were present in the original. This means that the reader can click on the links in the Table of Contents or the List of Illustrations & be instantly transported to that chapter or illustration. Our aim is to provide the reader AND the collector with long out-of-print (OOP) classic books at realistic prices. If you load your mobile device(s) with our books, not only will you have fingertip access to a large library of antiquarian and out-of-print material at reasonable prices, but you can mark them up electronically & always have them for immediate reference without worrying about damage or loss to expensive bound copies. We will be adding to our titles regularly, look for our offerings on your favorite e-book site.

Anbieter: Thalia AT
Stand: 23.01.2020
Zum Angebot