Elongation test

Okamoto et al. [48] first conducted an elongation test on PP-based nanocomposites in the molten state at constant Hencky strain rate, so using elongation flow optorheo-metry [49]. They also attempted to control the alignment of the dispersed silicate... 

Isolated, crystallized and characterized. Pure commercial samples of each of the three phenols and p-benzoqulnone (VIII), the oxidation product of hydroqulnone (Included to evaluate the possible vivo oxidation of hydroqulnone), were tested In lettuce and leafy spurge root elongation tests and In leafy spurge cell cultures (Table II). 

Lactuca sativa, 120 h inhibition of germination and root elongation test (Dutka, 1989a) ... 

It is for these reasons that much of the experimental work on metal tolerance has relied on laboratory tests for tolerance that seek to isolate the toxic effects of the metal from other possible factors. The most widely used technique is the root elongation test, in which the toxic effects of metals on roots are used to assess tolerance. Cuttings or tillers (for grasses) are grown in solutions containing varying concentrations of the... 

The comparison between the time evolution of stress and birefiingence during an elongational test at constant strain rate suggests that the total tensile stress is made up of two contributions (i) an entropic contribution arising from chain orientation and (ii) a second contribution related to the... 

The results of the previous example as well other more complex models that are analyzed in the problems section at the end of the chapter show that the relationships between the different components of the stress and strain tensors for viscoelastic materials can be established in terms of the operators P and Q. For example (9), for an elongational test... 

Fourier transform infrared spectroscopy (FTIR) ASTM E1421 Elongation tests Scanning electronic microscopy (SEM) Differential scanning calorimetry (DSC) ASTM D3417 Scanning acoustic microscopy (SAM)... 

Stabilized with 0.2% amine antioxidant High Density Polyethylene. Extrusion grades of hlgh-denslty polyethylene protected by 2.5% channel type black of 19 my particle size were exposed In a Weather-O-Meter for 10,000 hours without any evidence of serious mechanical damage, as measured by low temperature brittleness and elongation tests. This represents the useful limit In our accelerated weathering test, since as described In an earlier paper,(2) fllm-like deposits form on... 

I wish to acknowledge Donavon Bryant for his persistence in preparing the gel samples for tensile and elongation testing and testing of same, as well as carrying out the T pin tests and producing the DSC curves. I also wish to thank Amy Johnson for her editorial assistance and Mary Anne Walker for her preparation of the final document. 

Total cyanide Gross alpha and beta radioactivity Root elongation test... 

Other plant hormones, such as auxins and GAs. Finally, selected compounds were assayed using a cress hypocotyl elongation test. It has been demonstrated that cress is very sensitive to an internal deficiency of BRs and is therefore a useful species for evaluating BR biosynthesis inhibitors [7-8],... 

Nickel (0.002 in.) 9 (Lead cushion used on ends) bond broken between foil and laminate—foil elongated—testing machine jaws cut one end of foil... 

Once an object is formed, the internal stresses which result from cooling are usually reduced by annealing. The annealing point (cited in various sources as either 10 or 10 " Pa s), which is also determined using a fiber elongation test, is defined as the temperature where the stress is substantially relieved in a few minutes. The strain point (1013.5 ig defined as the temperature where stress is substantially relieved in several hours. The strain point is determined by extrapolation of data from annealing point studies. Other tests are also used for these two reference points, with slightly different results. 

Stronger the rheological response. Nonlinear viscoelastic effects are also evident in elongational tests as an enhancement of strain hardening, most prominent at low Hencky strain rates. 

Resin used in paint Adhesion by Cross-hatch test (B.S. AU 148) Taber Abrasion Loss (mg) after 1000 cycles (U.S. Standard No.141a method No. 6192) Cupping Test Depth of indentation (min) (B.S. 3900 Part E4) Elongation Test Minimum % elongation that produces cracks (ASTM D522-60)... 

It would violate the general principles of economy , if tryptophol was simultaneously formed, conjugated, and reoxidized in the same plant tissue. Etiolated pea seedlings, for example, efficiently transform potential lAA precursors into tryptophol and its glucoside [20]. Both compounds can also be converted to lAA, but in very low yields, as suggested by chromatographic evidence and bioassay [19, 20]. In the pea stem elongation test at about half-optimal response, the activity of... 

FIG. 26 Comparison of steady-state or plateau elongational viscosities of polyethylene melts from homogeneous isothermal elongation tests (unfilled s mibols) and transient tensile viscosities evaluated from converging flow (filled symbols). Unfilled symbols with tick denote tensile creep measurements. T = 150°C. 

Schematic of the apparatus used for planar elongation tests, in which a tubelike sample is extended and inflated. From Laun and Schuch (1989).

Note ACI318 requires that the anchor material in a ductile anchor have an elongation of at least 14 percent and a reduction of area of at least 30 percent during a tensile elongation test. See Table 2.1 for guidance on ductile material selection. For a discussion of ductility ofpost-installed anchors, see 4.5.3. 

The / value is intrinsic for the elongation test of the impurity-free Au-MC. However, in the test of nanograins plastic deformation, artifacts such as the external stress or strain rate or structural defects will contribute to the yield strength and hence the pre-factor/value. The/term is an adjustable parameter that may change when the nature of the bond is altered, such as in the cases of Si and Ti02 that will be shown shortly. 

Outdoor Weathering 5 Undergoes loss of tensile strength and elongation testing recommended Vespel DuPont... 

A.J. Frank, "Elongational Testing of Polymer Melts Using Uniaxial Extensional Flow and Lubricated Squeezing Flow Techniques," Conf. Engineering Rheol., London, 1983. 

I 8 Applications in the Adhesives and Construction Industries Adhesion-elongation test... 

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