Abstract:
A thermal-mechanical testing apparatus (100) for use with an electrically conductive specimen testing system. The apparatus includes a first compression anvil assembly (102), a mounting frame (104) coupled to the first compression anvil assembly (102), and a second compression anvil assembly (106) positioned opposite the first compression anvil assembly (102) and mounting frame (104). The first compression anvil assembly (102) includes a mounting plate (108), a first compression anvil (llO)coupled to the mounting plate (108), and a heating current ground system (112) coupled to the mounting plate (108). The mounting frame (104) includes a set of conductive end plates (114), a set of insulating connectors (120) connecting the conductive end plates (114), and a plurality of mounting components coupled to the insulating connectors (120) an mounting plate (108). The second compression anvil assembly (106) includes a conductive mounting plate (124), a second compression anvil (128)coupled to the conductive mounting plate (124), and a heating current by-pass system (132) coupled to the conductive mounting plate (124) and one of the conductive end plates (114).
Abstract:
Embodiments of the present invention enables users to determine the efficiency of acid fracturing in stimulating a formation. The testing procedures of embodiments of the present invention examine the elastic, plastic, and creeping effects on closing an acidized fracture during the life span of an oil/gas well. If it is determined that an acidized fracture will be closed for a given stress and temperature, then proppant fracturing should be used; otherwise, acid fracturing is the stimulation treatment to consider. The testing results also provide an estimation of the lifetime of an acid fracture for a given set of in-situ conditions of stress and temperature. If the lifetime is determined to be too short to make the fracturing treatment economically feasible, a different stimulation method should be considered, such as proppant fracturing or matrix acidizing.
Abstract:
Die Erfindung betrifft ein Verfahren zur Bestimmung der Weichheit von Tissuepapier. Dies können so genannte Hygienepapiere, wie z.B. Taschen-, Kosmetik-, Küchen-, Handtücher oder Toilettenpapier, sein. Bei dem erfindungsgemäßen Verfahren werden Proben von Tissuepapieren mechanisch mit Druck- und/oder Zugkräften mit jeweils gleichen Parametern beaufschlagt. Dabei werden dadurch emittierte Schallwellen mit mindestens einem Detektor erfasst und die so erfassten Messsignale werden dann einer Mustererkennung unterzogen.
Abstract:
A machine is described for testing, through repetitive cycles, at least one finished clothing product (C1C5), i.e. Completely realized, so as to simulate a plurality of conditions of use of said at least one clothing product (C1-C5)
Abstract:
At least one method, structure and apparatus used to measure tearing resistance of a commercial member. The method includes the use of full-scale testing methods and apparatuses to obtain unloading compliance measurements, which are used to generate a tearing resistance curve that includes the effects of geometry and considers data beyond the yield point of the commercial member. The commercial member may be a pipeline for carrying hydrocarbons.
Abstract:
A wedge-type anchor assembly, capable of meeting cracked concrete testing standards, comprises an anchor bolt component and a substantially C-shaped expansion sleeve component annularly disposed about the anchor bolt component. A plurality of annular grooves, threads, or teeth are disposed only about the forward end portion of the expansion sleeve component, as opposed to throughout the entire axial length thereof, so that when the anchor bolt component is moved axially through the expansion sleeve component, the maximum interference area (M. I. A. ) and maximum interference volume (M. I. V. ) can be generated between the anchor bolt component and the expansion sleeve component in a controlled and predictable manner, as well as between the expansion sleeve component and the internal peripheral side wall portions of a concrete substrate or substructure can be generated so as to enhance pull-out resistance and reliability of the anchor assembly within the concrete substructure or substrate.
Abstract:
An orthopedic simulator, such as a spinal implant wear test machine, is provided with a specimen containment module that may be removed from the machine as a unit. The releasable attachability of the specimen containment module permits remote specimen installation and reduces environmental contamination.
Abstract:
A transmission for torque transfer with axial compliance and a test machine employing the transmission has a flexible connector that provides high torsional stiffness and high axial compliance while inducing no frictional forces. The transmission includes an axial portion allowed to translate freely along its axis due to a high axial compliance of the transmission while the transmission simultaneously facilitates rigid torque transfer.
Abstract:
A system (100, 200) and method to expand capabilities of simulation and durability testing of a specimen (120, 220) under test utilizing a virtual signal that is generated by combining the actual measured signal from a transducer (115, 125, 215, 217) with a supplemental or simulated signal created y a function (130, 230, 232) based on position, load or another known or measurable parameter. This virtual signal may then be inserted into a control loop to adapt the system to this new, calculated or combined signal.
Abstract:
A long life fatigue strength design method for metallic material capable of designing an optimum mechanical part according to a set service life by considering an increase in ODA (area affected by hydrogen observed blackish by a metallurgical microscope) dimensions according to the predicted usable life of the mechanical part, comprising the steps of obtaining, from the results of a fatigue test, a functional relation between the number of repetitions of stress up to rupture and the dimensions of a hydrogen affected area around inclusions affected by trapped hydrogen, obtaining, from the functional relation, equivalent defect dimensions as the dimensions of the inclusions after an increase in dimensions corresponding to the number of repetitions of predicted working stress of the mechanical part using the metallic material, and designing the mechanical part by using the equivalent defect dimensions for the calculation of a long life fatigue strength such as an allowable stress, whereby a rupture life design can be performed with the increase in ODA dimensions taken into account according to the predicted usable life of the mechanical part.