Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Ronald L. Spangler"'
Publikováno v:
SPIE Proceedings.
A comparison of different commercially available packaged piezoelectric actuators is presented. The comparisons are based on force, stress and strain performance at similar field densities. A new metric of comparison, based on energy efficiency, is i
Autor:
Leonard Lublin, Palash P. Das, Alexander I. Ershov, David J. Warkentin, Jody Vipperman, Brian C. Klene, Ronald L. Spangler
Publikováno v:
SPIE Proceedings.
With the advent of 193 nm systems processing 300 mm wafers, the production lithography cell is about to undergo a technology shift. The mechanism for delivering the beam from the light source to the illumination system, here referred to as a Beam Del
Publikováno v:
SPIE Proceedings.
Excimer laser light sources for photolithography are subject to a cycle of ever-tightening precision requirements, dictated by the design-rule shrinks planned into the industry roadmap. But pulse-to-pulse stability of the center wavelength of the emi
Publikováno v:
SPIE Proceedings.
Several sports are based upon a tool (club, bat, stick) striking an object (ball, puck) across a field of play. Anytime two structures collide, vibration is created by the impact of the two. The impact of the objects excites the structural modes of t
Autor:
Ronald L. Spangler, Robert N. Jacques
Publikováno v:
40th Structures, Structural Dynamics, and Materials Conference and Exhibit.
Modem high-performance aircraft can experience severe buffeting vibrations of the tail empennage during high angle of attack maneuvers, which negatively impacts fatigue life and controllability. ACX and the US Air Force have developed a system to con
Publikováno v:
SPIE Proceedings.
This paper explains how piezoelectric devices can be used to control vibrations in a snowboard. Furthermore the details of the approach, testing, design and analysis of a piezoelectric damper applied to a production snowboard are described here. The
Autor:
Douglas A. Henderson, Ronald L. Spangler, Mark A. Hopkins, Robert W. Moses, Thomas G. Ryall, David Zimcik
Publikováno v:
Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies.
Buffeting is an aeroelastic phenomenon that plagues high performance aircraft, especially those with twin vertical tails. Unsteady vortices emanate from wing/fuselage leading edge extensions when these aircraft maneuver at high angles of attack. Thes
Publikováno v:
SPIE Proceedings.
Using recent advances in small, surface-mount electronics, coupled with proprietary packaging techniques, ACX has developed the SmartPackTM. The design and realization of this self-contained, active piezoelectric control device are described in this
Publikováno v:
JTRP Technical Reports
The problem of weed control in roadside plantings is of major concern in any highway landscaping program. The high cost of continual maintenance around these plantings is primarily related to the problem of weed control. Presently the practice is to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bc7ea324d93aa2c3480d45fc06d6b89
https://doi.org/10.5703/1288284313707
https://doi.org/10.5703/1288284313707
Autor:
Ronald L. Spangler
Publikováno v:
JTRP Technical Reports
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ad9b26f9c60a4b76fe10e157a43ef63
https://doi.org/10.5703/1288284313729
https://doi.org/10.5703/1288284313729