H-pull test

An international version of the H-pull test for textile cord was published as ISO 464753 in 1982 and the method for steel cord, ISO 560354, in 1986. It is perhaps a reflection of the responsible ISO committee being concerned with rubber testing generally, and not having any specific expertise in tyres, that the methods have not been revised since. In the steel cord method the... 

ISO 4647, 1982. Determination of static adhesion to textile cord - H-pull test. 

The "original" method, the H-pull or "H-block" test, was first standardised by ASTM together with a variant, the "U" test. In the former, two blocks of rubber are gripped in the tensile machine and in the latter a loop of cord is hooked onto one of the grips. 

Schroth M. H., Kleikemper J., Bollinger C., Bemasconi S. M., and Zeyer J. (2001) In situ assessment of microbial sulfate reduction in a petroleum-contaminated aquifer using push-pull tests and stable sulfur isotope analyses. J. Contamin. Hydrol. 51, 179-195. 

Pull tests were carried out using an Instron machine. The procedure used for determining the pull strength is given in a subsequent paper.(4) Pull tests were also performed in aqueous environments. After the curing step, the rods were immersed in boiling water for 2 h. The lower jaw of the Instron tensile tester was modified to perform pull tests in an aqueous medium. 

Istok J. D., Humphrey M. D., Schroth M. H., Hyman M. R., and O Reilly K. T. (1997) Single-well push-pull test for in situ determination of microbial activities. Ground Water 35, 619 631. 

Both static and dynamic tests are employed to evaluate the adhesion strength of cord-mbber composites. The major static tests used in tire industry are H-adhesion, 90/180° peel test, tire cord adhesion test (TCAT) and co-axial shear pull-out test (CSPT). Although these methods are... 

At least 1 h after fluorescein staining, the test substance is placed in one eye of each animal by gently pulling the lower lid away from the eyeball to form a cup (conjunctival cul-de-sac) into which the test material is dropped. The upper and lower lids are then gently held together for 1 s to prevent immediate loss of material. 

Butler, E.P., Fuller, E.R. and Chan, H.M. (1990). Interface properties for ceramic composites from a single-fiber pull-out test. In Tailored Interfaces in Composite Materials. Mat. Res. Soc. Symp. Proc, Vol. 170, Materials Research Society, Pittsburg, PA. pp. 17 24. 

Kallas, M.N., Koss, D.A., Hahn, H.T. and Hellmann, J.R. (1992). Interfacial stress state present in a thin slice fiber pull-out test. J. Mater. Sci. 27, 3821-3826. 

Therefore, admixture studies are performed on parenteral drugs with commonly used intravenous diluents. Studies are performed by preparing admixtures of the drug product with various diluents in an appropriate type of flexible intravenous bag. Initial samples are taken for analysis before the bags are stored in temperature-controlled stability chambers. Subsequent samples may be pulled at 6-, 12-, 24-, 48-, and 72-h time points. The analytical tests commonly performed include visual appearance, pH, and HPLC assay. Degradation products are not commonly tested unless the method has been previously evaluated for specificity and stability-indicating ability with a particular intravenous diluent. This is necessary because there may be differences in the stability profile of the product in its original formulation compared to the admixture solution. Formation of any particulate matter is detected by visual... 

Print adhesion on plastics (and foil) is normally checked using a self-adhesive tape peel test. A few inches of a suitable standard tape is firmly pressed onto the print area then pulled off, slowly at first, then more rapidly. An assessment of print adhesion can be made from the quantity (ideally none) removed. Adhesion can vary according to the type and colour of the ink, the degree of pretreatment, the surface involved and the printing process, etc. In order to test print under likely use conditions, product immersion tests may be necessary 60°C (140°F) is a frequently used condition, for 3 to 6 h. If product-pack may be used with soapy hands, a solution of soap can be employed. A print adhesion test, as above, can then be carried out, on the washed material, after it has been cooled to room temperature. 

Fig. 12. The platform pull-up test. Suspended pups are challenged to lift their hindlimbs to a platform. Saline-treated pups take almost twice as long to perform this task as do normal pups. a-MSH- and ACTH 4-10 (40

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