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Intelligent Freeform Deformation for LED Illumination Optics

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Book Series: Spektrum der Lichttechnik / Karlsruher Institut für Technologie (KIT), Lichttechnisches Institut ISSN: 21951152 ISBN: 9783731507413 Year: Volume: 16 Pages: VII, 151 p. DOI: 10.5445/KSP/1000077210 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
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In freeform optics, the optimization is limited due to large number of parameters present in it. This limitation was overcome by a technique known as optimization using freeform deformation (OFFD). Though this technique proved to work well, it has left many challenges to the optical designer. These challenges are solved by providing mathematical design techniques. This implementation transformed the OFFD into an intelligent tool replacing the optical designer's efforts during the design process.

(De)formierte Körper 2 - Die Wahrnehmung und das Andere im Mittelalter

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ISBN: 9783863951610 Year: Pages: 327 Language: German
Publisher: Universitätsverlag Göttingen
Subject: History
Added to DOAB on : 2014-12-09 11:01:13
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In der Kultur des Mittelalters nehmen Körper in ihrer äußeren Zeichenhaftigkeit eine zentrale Stellung ein. Dies gilt insbesondere für deformierte Körper, die aufgrund ihrer auffälligen Andersartigkeit immer wieder Thema wahrnehmungstheoretischer Diskurse werden. Das zeigt sich in zweierlei Hinsicht: Zum einen wird bereits in zeitgenössischen Quellen diskutiert, wie die körperlichen Besonderheiten den inneren Imaginationsapparat der Betrachter stimulieren, zum anderen zeichnen sich körperlich Deformierte zumindest in Kunst und Literatur auffallend häufi g durch gesteigerte Wahrnehmungsfähigkeiten aus. Die körperliche Deformation markiert dabei Grenzüberschreitungen. Sie weist über die Dinge hinaus auf ‚das Andere‘ – gleich ob es sich dabei um ein kulturell Anderes handelt, oder um das ‚Andere‘ der Diesseitigkeit: das Transzendente und Göttliche. Obgleich man für das Hoch- und Spätmittelalter kein einheitliches Körperkonzept annehmen kann, ist auffällig, an wie vielen Schnittpunkten der deformierte Körper ins Zentrum der Wahrnehmung rückt. Diese Vielfalt spiegelt sich auch in den Perspektiven verschiedener Fachdisziplinen, wie z. B. Kunst- und Literaturwissenschaft, Medizingeschichte, Dis/ability Studies oder Theologie in diesem Band, die den Besonderheiten des deformierten Körpers in seinem Verhältnis zur Epistemologie und eben zum "Anderen" gezielt nachspüren.

Objektorientierte Modellierung zur geodätischen Deformationsanalyse [online]

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Book Series: Schriftenreihe des Studiengangs Geodäsie und Geoinformatik ISSN: 16129733 ISBN: 3937300066 Year: Volume: 2004,1 Pages: 135 DOI: 10.5445/KSP/1152004 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Astronomy (General)
Added to DOAB on : 2019-07-30 20:01:59

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Die bisherigen Realisierungen von Netzausgleichungs- und Deformationsanalysealgorithmen in operationellen Softwaresystemen sind meist nur Insellösungen, die sich schlecht erweitern lassen und einen hohen Wartungsaufwand erfordern.Im vorliegenden Buch wird gezeigt, wie durch Anwendung von aktuellen Forschungsergebnissen aus der Informatik eine höhere Flexibilität bei geodätischen Softwarelösungen erreicht und ein durchgängiger Datenfluss von der Datenerfassung, über die Aufbereitung der Messungen, die Netzausgleichung und die Deformationsanalyse bis hin zur Visualisierung realisiert werden kann. Dazu wurde ein komplexes Klassenmodell, das weite Teile der Ingenieurgeodäsie modelliert und ein komplettes Vermessungsprojekt abbilden kann, aufgestellt.Im Bereich der Netzausgleichung liegt der Schwerpunkt auf der Entwicklung eines Lösungsansatzes zur allgemeinen Formulierung von Beobachtungsgleichungen und zur sinnvollen Integration der statistischen Test in das Klassenmodell. Die Algorithmen der Deformationsanalyse werden in Modelle eingeteilt, die eine Standardisierung der entsprechenden Schnittstellen ermöglichen, um so den Grundsätzen der Flexibilität und leichten Erweiterung gerecht zu werden.

Investigation of deformation mechanisms in nanocrystalline metals and alloys by in situ synchrotron X-ray diffraction

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Book Series: Schriftenreihe des Instituts für Angewandte Materialien, Karlsruher Institut für Technologie ISSN: 21929963 ISBN: 9783866449626 Year: Volume: 13 Pages: X, 223 p. DOI: 10.5445/KSP/1000031997 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:01
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In this work, different nanocrystalline metals and alloys were investigated by a synchrotron-based in situ XRD mechanical testing technique in order to investigate the dominant deformation mechanisms. All tested samples show a succession and coexistence of several mechanisms, regardless of grain size, loading condition, or sample geometry. However, the relative shares of the individual mechanisms strongly vary and depend on parameters such as grain size, sample purity, and alloy composition.

Advanced Nanoindentation in Materials

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ISBN: 9783038427490 9783038427506 Year: Pages: 236 DOI: 10.3390/books978-3-03842-750-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General)
Added to DOAB on : 2018-03-16 13:26:33
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This Special Issue "Advanced Nanoindentation in Materials" contains some of the latest developments in the field of small-scale contact mechanics for a wide range of materials and biological cells. The featured manuscript revealed a new ultra-high strain rate nanoindentation method that will enable new scientific understanding of time-dependent material properties. The book also presents unique material properties of super alloys and other structural materials characterized by indentation methods. In addition to engineering materials, deformation behaviors of live cancer cells on sharp pillar structures were discussed in this book with the hope to stimulate interest in the mechanical contact behaviors of biological cells.

Observing Geohazards from Space

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ISBN: 9783038427759 9783038427766 Year: Pages: VIII, 244 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Geology --- Earth Sciences --- Physics (General)
Added to DOAB on : 2018-04-27 16:24:07
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With a wide spectrum of imaging capabilities, Earth observation offers several opportunities for the geoscience community to map and monitor natural and human-induced Earth hazards from space. The objective of this book is to collect scientific contributions on the development, validation, and implementation of satellite data, processing methods, and applications for mapping and monitoring of geohazards such as slow moving landslides, ground subsidence and uplift, and active and abandoned mining-related ground movements.The book includes research papers published in the Special Issue "Observing Geohazards from Space" of Geosciences, which provides a number of novel case studies demonstrating how Earth observation and remote sensing data can be used to detect and delineate land instability and geological hazards in different environmental contexts and using a range of spatial resolutions and image processing methods.

Crystal Indentation Hardness

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ISBN: 9783038429678 9783038429685 Year: Pages: VIII, 326
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General)
Added to DOAB on : 2018-07-05 12:27:53
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Dear Colleagues,Determinations of the indentation hardness properties of crystals have expanded to cover the full characterizations of their important elastic, plastic and cracking behaviors, particularly as accomplished with the increased measuring capabilities of nanoindentation hardness testing. No crystal structure of any bonding type is either too soft or too hard to prevent measurement with a suitable probing indenter. The current Special Issue is devoted to surveying the topic with emphasis given in a collection of reports to: (1) the diversity of crystals being tested; (2) the variety of measuring techniques; and (3) the wealth of information being obtained.Prof. Dr. Ron ArmstrongDr. Stephen WalleyProf. Dr. Wayne L. ElbanGuest Editors

Crystal Dislocations: Their Impact on Physical Properties of Crystals

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ISBN: 9783038974659 / 9783038974666 Year: Pages: 316 DOI: 10.3390/books978-3-03897-466-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General) --- Analytical Chemistry
Added to DOAB on : 2019-01-09 12:11:05
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The proposed existence of the edge and screw dislocation in the 1930s, and the subsequent work showing that dislocation theory could explain the plastic deformation of crystals, represent an important step in developing our understanding of materials into a science. The continued work involved with characterization of dislocations and linking them to a variety of physical properties in both single and poly crystals have made enormous progress over the past 50 years. It is rare to find a technical application involving a material with any crystal structure that is not impacted by dislocations; mechanical properties, massive phase transformations, interphases, crystal growth, electronic properties, the list goes on. In many systems the properties is controlled by the formation of partial dislocations separated by a stacking fault; for example plastic deformation via deformation twinning. And finally, giant strides have been made in characterization and modeling of systems containing dislocations. The Special Issue on “Crystal Dislocations” is intended to provide a unique international forum aimed at covering a broad range of results involving dislocations and their importance on crystal properties and crystal growth. Scientists working in a wide range of disciplines are invited to contribute to this cause.Dr. K. Peter D. Lagerlof, Associate Professor of CeramicsGuest Editor

Entwicklung und Validierung einer neuen Methode zur Charakterisierung des Scherverhaltens von Carbonfasergewebe mit Binderauftrag unter Normalkraft und viskoser Reibung bei hohen Prozesstemperaturen

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Book Series: Karlsruher Schriftenreihe Fahrzeugsystemtechnik / Institut für Fahrzeugsystemtechnik ISSN: 18696058 ISBN: 9783731508380 Year: Volume: 65 Pages: XXX, 217 p. DOI: 10.5445/KSP/1000085533 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
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In this work the influence of normal force on the shear behavior of carbon fiber fabric during the draping process at different temperatures is investigated. For this purpose an extended test method based on the picture frame test is developed and its suitability tested. The normal force and the visco-elastic friction of the binder particles applied to the fabric show a significant increase in shear resistance.

Untersuchung und Modellierung des viskoplastischen Verformungsverhaltens oxidpartikelverstärkter Stähle

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Book Series: Schriftenreihe des Instituts für Angewandte Materialien, Karlsruher Institut für Technologie ISSN: 21929963 ISBN: 9783731506744 Year: Volume: 67 Pages: XV, 200 p. DOI: 10.5445/KSP/1000069792 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
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The high-temperature deformation behavior of oxide dispersion strengthened steels was investigated and correlated to the resulting microstructure using electron microscopy. Viscoplastic constitutive equations were developed from the results to model the deformation behavior.

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