Bending tests results

The bending test results showed that a preferable face layer thickness in each face was 15% to 20% of the total thickness. 

In the following these ideas are applied to describe bending test results of a commercial silicon nitride ceramic. 

Fig. 3 Characteristic strength versus (effective) volume in a double logarithmic plot. Shown are test results on specimens of different size. The straight line shows the Weibull extrapolation based on the four point bending test results. The dashed lines are the 90 % confidence intervals of the prediction.

Bending test results of 6 reference beams of 4 m span are listed in the top line as GL24h. The bipartite beam, listed as 027-2 because it was connected with this adhesive layer, was tested at three different spans three specimens of 3.7 m span, 6 specimens of 4.0 m span and 3 specimens of 4.3 m span... 

Figure 2.1 Static Bending Test Results of 2x4 L.nniber Pieces [Mack, 1990 ...

A100 h exposure under stress to sulfurized and chlorinated soluble oil emulsions did not afreet 25 °C (75 °F) bend test results frnm low-stress ground and end milled end cut Ti-6A1-4V relative to results frum a neutral soluble-oil emulsion... 

Several fluxes were used to attach EGAs to test coupons. Based on the four-point bending test results, one flux increased the interfacial strength of the joint by approximately 15%, as compared with the other fluxes. However, the fracture mode remained the same (interfacial fracture). 

Figure 4.Three point bending test results for PLLA and PLLA/TCP samples flexural strength,strain at flexural strength and strain at break, flexural modulus measured after various biodegradation periods.

Evaluation of attack if other than general, such as crevice corrosion under suppoi t rod, pit depth and distribution, and results of microscopic examination or bend tests... 

Slow Strain-Rate Test In its present state of development, the results from slow strain-rate tests (SSRT) with electrochemical monitoring are not always completely definitive but, for a short-term test, they do provide considerable useful SCC information. Work in our laboratory shows that the SSRT with electrochemical monitoring and the U-bend tests are essentially equivalent in sensitivity in finding SCC. The SSRT is more versatile and faster, providing both mechanical and electrochemical feedback during testing. 

Table 3.25 Rotating bend fatigue test results for a number of stainless steels...

Fig. 8.92 Comparison of test results from bend and tension tests upon Al-Zn-Mg alloy in 3% NaCl plus 0.1% H2O2 (after Brenner and Gruhl )...

All ceramic materials are elastic, and hence show very little bending under load. They do not exhibit any creep under load. The modulus of rupture type of test is the routine test most commonly used in the ceramic industry, and gives the figure generally quoted for the strength of the material. It must be remembered that the value obtained for any particular body depends on the cross-sectional area of the test piece thus figures quoted from test results may be higher than those obtained on actual articles, which usually have a thicker section than the test piece. 

Preliminary results of work at the University of Calgary confirm the high fatigue life with unmodified sulphur as the binder. In 1/3 point bending tests at a load nominally 95% of static strength, the fatigue life was on average 1670 x 103 cycles. 

The next series of reports based on use of bark for wet process hardboard were published over a 7-year span from 1950-1956 by Anderson and Runckel. In the first report (22), the results included laboratory boards made from Douglas-fir slabwood containing bark, which varied between 15 and 45% of the total furnish. Bending tests indicated adequate strengths were obtained, and addition of bark enhanced moisture resistance of the boards. Acceptable boards also were made when white fir and western hemlock barks made up a portion of the furnish. No binder was added to the Asplund-type fiber. 

So far this year, two reports have been published on the effect of bark in medium-density fiberboard. The first by Woodson (61) covered the bark of three southern hardwoods, sweetgum, southern red oak, and mockernut hickory percentage of bark in the whole-tree furnish was 13.4, 20.0, and 18.6%, respectively. Urea-melamine formaldehyde binder was added at 8-10%, and wax at 1%. Test results showed inclusion of bark decreased tensile and bending strengths by 16-18%, MOE by 10-14%, and IB by 8%. Linear expan sion was not affected significantly by bark. Thickness swelling was improved in two of the three species. Woodson concluded good quality, medium-density fiberboard could be made from barky chips. 

As displays and shift registers are fabricated using the same technology, it is expected that results from shelf-life and bending tests on displays are also valid for shift registers. 

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