APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Previous Issue Next Issue

24 Sep 2007

Volume 91, Issue 13, Articles (13xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 91, 132501 (2007); http://dx.doi.org/10.1063/1.2786856 (3 pages)

V. Rose, X. M. Cheng, D. J. Keavney, J. W. Freeland, K. S. Buchanan, B. Ilic, and V. Metlushko
Enlarge Image | Read More
Return to All Sections
back to top
RSS Feeds

Measurement of dynamic full-field internal stresses through surface laser Doppler vibrometry

Stephen D. Holland, Jeremy Renshaw, and Ron Roberts

Appl. Phys. Lett. 91, 134101 (2007); http://dx.doi.org/10.1063/1.2790379 (3 pages)

Online Publication Date: 24 September 2007

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We present a method for evaluating internal dynamic stresses in a solid vibrating body from measurements of surface motion. The method relies on the same mathematics as boundary element method: A boundary reciprocity integral represents interior motion as a surface integral of boundary motion times the Green’s function. The surface motions are measured with a laser vibrometer rather than simulated, giving a direct measurement of internal motions and internal dynamic stresses. Experimental results on a flexing beam demonstrate that stresses measured in this fashion match those calculated from elementary theory.
Show PACS
42.62.Eh Metrological applications; optical frequency synthesizers for precision spectroscopy

An x-ray streak camera with high spatio-temporal resolution

J. Feng, H. J. Shin, J. R. Nasiatka, W. Wan, A. T. Young, G. Huang, A. Comin, J. Byrd, and H. A. Padmore

Appl. Phys. Lett. 91, 134102 (2007); http://dx.doi.org/10.1063/1.2793191 (3 pages) | Cited 11 times

Online Publication Date: 27 September 2007

Full Text: Read Online (HTML) | Download PDF

Show Abstract
An x-ray streak camera with high resolution in both temporal and spatial dimensions has been developed. It is achieved by using extraction-mesh acceleration and a large opening aperture magnetic solenoid lens design. High resolutions in the temporal and spatial dimensions can be retained in a wide 53 ps time window. A temporal resolution of 233 fs and a spatial resolution of 10 μm have been demonstrated using a Au photocathode.
Show PACS
07.85.Fv X- and γ-ray sources, mirrors, gratings, and detectors
85.60.Ha Photomultipliers; phototubes and photocathodes

Simplified experimental technique to extract the acoustic radiation induced static strain in solids

Karthik Thimmavajjula Narasimha, Elankumaran Kannan, and Krishnan Balasubramaniam

Appl. Phys. Lett. 91, 134103 (2007); http://dx.doi.org/10.1063/1.2793181 (3 pages) | Cited 7 times

Online Publication Date: 28 September 2007

Full Text: Read Online (HTML) | Download PDF

Show Abstract
A simplified experimental technique to measure the acoustic radiation induced static strain during the longitudinal acoustic wave propagation in solids is proposed. Experiments have been carried out to extract the static displacement (dc) component without resorting to electronic filters, as in the case of previously reported experimental measurements. This prevents the influence of the filter time response characteristics on the measurement. The dependence of the static displacement amplitude on the square of the fundamental amplitude of the input wave, its being independent of the burst width of the tone burst, and its abnormal variation at low input amplitudes are reported.
Show PACS
46.80.+j Measurement methods and techniques in continuum mechanics of solids
07.10.Pz Instruments for strain, force, and torque
43.20.-f General linear acoustics
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close