ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Embedded optical fiber sensors for materials evaluation (1989)

Claus, R. O. ; Bennett, K. D. ; Vengsarkar, A. M. ; [et al.]

Springer

Journal of nondestructive evaluation 8 (1989), S. 135-145

add to mindlist on the mindlist

Details

ISSN: 1573-4862

Keywords: Optical fibers ; fiber optic sensors ; embedded sensors ; composite materials

Source: Springer Online Journal Archives 1860-2000

Topics: Electrical Engineering, Measurement and Control Technology , Mathematics

Notes: Abstract Optical fiber waveguides embedded within materials have been applied to the measurement of chemical changes, strain, and temperature inside materials. This paper reviews some of the research that has been performed in this area over the past 10 years and cites the theoretical and demonstrated performance of such sensors for material evaluation during its manufacturing, in service lifetime and degradation periods.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00565637

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Determination of residual stresses in denture base polymers using the layer removal techniqueThis paper is based on a thesis submitted in partial fulfillment of the M.S. degree in Oral Sciences (K. M. Murphy), State University of New York at Buffalo, New York 14214. (1985)

Murphy, K. M. ; Carter, J. M. ; Johnson, R. R. ; [et al.]

Hoboken, NJ : Wiley-Blackwell

Journal of Biomedical Materials Research 19 (1985), S. 971-980

add to mindlist on the mindlist

Details

ISSN: 0021-9304

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Medicine , Technology

Notes: In order to study the influence of residual stresses on dimensional accuracy and mechanical properties of denture bases, an experimental model was devised for measurement of residual stresses in acrylic denture base polymers. Rectangular bar coupons were cut from resin plates heat processed by conventional dental methods. They included samples which had been slow and fast cooled after polymerization and had been stored in dry and wet environments. Uniaxial residual stress distributions for each coupon were disclosed by removing layers of known thicknesses and measuring the ensuing deflection of the specimens. Coupons of a commercial acrylic resin were annealed and used as controls. ANOVA and Scheffe's test were used to compare experimental conditions at the 95% confidence level. Dry specimens exhibited residual surface compressive stresses from 0.43-0.83 MPa (62-120 psi). Water-stored specimens showed higher stress levels, 2.86-3.24 MPa (414-470 psi). Slow cooled pigmented acrylic coupons which were dry showed higher residual stresses compared with other dry but nonpigmented specimens. No significant differences were found between pigmented or clear coupons which contained moisture.

Additional Material: 5 Ill.