منابع مشابه
Strength and Interface Analysis
fiber post (GFP) treated or not with phosphoric acid, silane coupling agent, and unfilled resin. GFPs were etched or not with 37% phosphoric acid and different surface coating applied: silane coupling agent, unfilled resin, or both. Composite resin blocks were built around a 4-mm height on the GFP. Unfilled resin (20 s) and composite resin (40 s) were light activated by a light-emitting diode u...
متن کاملTensile Strength Determination of the Interface
A method of testing the tensile strength of the porcelain-gold bond has been developed. Tensile strengths of the bond are improved primarily by the formation of an oxide layer on the gold before baking the porcelain and not by the degree of gross surface roughness. The oxide layer may act either as a transition ayer or i t may create microsurface roughness. The gross surface roughness probably ...
متن کاملDipole strength measurements in the 132Sn region
Properties of the Giant Dipole Resonance in nuclei far off stability provide information on the isospin dependence of the effective nuclear interaction [1]. Moreover, recent RPA calculations of the dipole strenght in n-rich nuclei predict the existence of a new mode of collective excitation, exhausting a considerable fraction of the sum rule strenght [2, 3]. This so called Pygmy resonance, expe...
متن کاملTarget Strength Measurements in Shallow Water
A submarine on patrol needs to know how far it can be detected by active sonar. In order for such sonar performance calculations to be useful the target strength (TS) of the submarine must be known. Measurements done in deep water indicate that TS can vary as much as 20 dB as a function of aspect angle. This corresponds to a doubling of the detection distance in a noise limited environment, and...
متن کاملTarget Strength Measurements on Metal Spheres
Introduction The estimation of fish abundance by the echo-integrator method requires a sonar that has been accurately calibrated. This may be done by measuring the signal received from a target whose acoustic properties are known. Several kinds of metal spheres have been used as calibration targets, in particular brass (Forbes, Simmonds and Edwards, 19801, copper (Foote, et a/., 1981) and tungs...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: JOM
سال: 2016
ISSN: 1047-4838,1543-1851
DOI: 10.1007/s11837-016-2158-9