Abstract: A torque sensor system having an index function and ascertaining a torque between an input shaft and an output shaft connected to each other via a torsion bar, includes: a magnetic unit having a magnetic pole wheel for generating a magnetic field, the magnetic unit being rigidly connected to one of the two shafts; a flux ring unit having a flux ring system for converting and conducting the magnetic flux generated by the magnetic unit, the flux ring unit being rigidly connected to the other shaft; and a sensor unit having at least one first magnetic field-sensitive sensor element for sensing changes in the magnetic flux through the flux ring system, the sensor unit being mounted in a stationary manner relative to the flux ring unit. The index function is implemented with the aid of an index magnet and a further magnetic field-sensitive sensor element.

Abstract: The torque tool device includes a torque tool and an information processing terminal. The torque tool is capable of measuring the torque value at which a bolt or the like was tightened and then transmitting the measured torque value via wireless communication unit and the information processing terminal has information processing unit receiving the measured torque value and determining whether the torque value is acceptable.

Abstract: A method for three-dimensional crack propagation, morphology, and initiation suited to directed surfaces, or stacks of directed surfaces. An external damage measure and failure criteria can be incorporated, as well as a rule-based crack direction and morphology capability. This method is ideal for laminated composites. Further, the use of external damage and failure, and rule-based crack propagation, this method is ideal for multi-scale modeling and use in applications where knowledge and rules are necessary or desirable for guiding, driving, or influencing failure modes, directions, or other situations that are not directly incorporated into the governing mechanical equations.

Abstract: In one aspect, the present invention relates to a pressure sensing/force generating device comprising a non-planar substrate, a printed pressure sensitive element comprising (a) a piezoelectric material containing ink composition capable of producing a piezoelectric effect/piezoresistive effect and/or (b) a dielectric material containing ink composition capable of producing a capacitive effect. It also includes a first printed electrode comprising a conductive ink composition, and a second printed electrode comprising a conductive ink composition. The first and second electrodes are in electrical contact with the printed pressure sensitive element. The first and second printed electrodes and the printed pressure sensitive element collectively form a pressure sensitive junction, which is coupled to the non-planar substrate. The present invention further relates to medical devices comprising the pressure sensing/force generating device and methods of making such devices.

Abstract: A device for measuring rigidity, flexibility, and other properties associated with deformation of a thin planar material sample such as carpeting is described. The device is portable and can be manually operated. The device includes a movable testing assembly which is used to urge a testing member against a sample and measure compressive force(s) relative to deformation of the sample.

Abstract: A drop test apparatus performs a drop test on a product. The drop test apparatus includes a drop control module and a support module. The drop control module includes a bottom plate and a support beam substantially perpendicularly attached to the bottom plate. The support module is attached at a predetermined height to the support beam and includes a lever for detecting whether the product is placed in a desired position. A support panel is disposed at a first end of the lever for supporting the product. A second end of the lever is under a predetermined force for maintaining the lever in a balanced state when the product is placed in the desired position.

Abstract: A bicycle force sensing device is basically provided with an attachment member, a translation detecting structure and an orientation detector. The attachment member is configured to be mounted to a bicycle bottom bracket hanger and is configured to receive and rotatably support a crank axle. The translation detecting structure is coupled to the attachment member such that the translation detecting structure senses strain on the attachment member in a first strain measurement direction and in a second strain measurement direction that is nonparallel to the first strain measurement direction. The orientation detector is coupled to the attachment member such that the orientation detector detects an orientation of the attachment member.

Abstract: The invention provides fatigue testing of a material specimen while the specimen is disposed in a high pressure fluid environment. A specimen is placed between receivers in an end cap of a vessel and a piston that is moveable within the vessel. Pressurized fluid is provided to compression and tension chambers defined between the piston and the vessel. When the pressure in the compression chamber is greater than the pressure in the tension chamber, the specimen is subjected to a compression force. When the pressure in the tension chamber is greater than the pressure in the compression chamber, the specimen is subjected to a tension force. While the specimen is subjected to either force, it is also surrounded by the pressurized fluid in the tension chamber. In some examples, the specimen is surrounded by hydrogen.

Abstract: A compressive force measurement device with a pressure-/voltage converter in chip technology features a spherical segment-shaped sensor area. The pressure-/voltage converter is disposed between one base disc and one cover disc, wherein the base disc and the cover disc are tensioned against one another by means of springs with essentially identical pulling force. Forces acting on the cover disc have the effect that the cover disc always positions itself perpendicularly to the direction of force, whereby some of the springs are additionally loaded and others are relieved and thereby a compensation of forces takes place that act obliquely on the compressive force measurement device.

Abstract: A micromachined or microelectromechanical system (MEMS) based push-to-pull mechanical transformer for tensile testing of micro-to-nanometer scale material samples including a first structure and a second structure. The second structure is coupled to the first structure by at least one flexible element that enables the second structure to be moveable relative to the first structure, wherein the second structure is disposed relative to the first structure so as to form a pulling gap between the first and second structures such that when an external pushing force is applied to and pushes the second structure in a tensile extension direction a width of the pulling gap increases so as to apply a tensile force to a test sample mounted across the pulling gap between a first sample mounting area on the first structure and a second sample mounting area on the second structure.

Abstract: The present invention provides elastic constant and visco elastic constant measurement apparatus etc. for measuring in the ROI in living tissues elastic constants such as shear modulus, Poisson's ratio, Lame constants, etc., visco elastic constants such as visco shear modulus, visco Poisson's ratio, visco Lame constants, etc. and density even if there exist another mechanical sources and uncontrollable mechanical sources in the object. The elastic constant and visco elastic constant measurement apparatus is equipped with storage of deformation data measured in the ROI, a calculation of elastic and visco elastic constants by calculating the shear modulus etc. at arbitrary point in the ROI from measured strain tensor data etc., wherein the calculation of the elastic and visco elastic constants numerically determines elastic constants etc. from the first order partial differential equations relating elastic constants etc. and strain tensor etc.

Abstract: Between an upper substrate 10 and a lower substrate 20 parallel to the XY plane, a first columnar member P1 and a second columnar member P2 are disposed. The upper end of each columnar member P1 or P2 is connected to the upper substrate 10 via an upper film portion 11 or 12, and the lower end is connected to the lower substrate 20 via a conductive lower film portion 21 or 22. The columnar members P1 and P2 are inclined mutually opposite with respect to vertical reference axes R1 and R2. When a rightward force +Fx is applied to the upper substrate 10 and the upper substrate 10 slides rightward, the columnar member P1 incline in a laying-down direction and the lower film portion 21 is deformed upward, and the columnar member P2 inclines in a rising direction and the lower film portion 22 is deformed downward.

Abstract: Provided is a jig for a compression test in a heating furnace capable of variously changing boundary conditions such as a both-end hinge, a both-end fixing, or one-end hinge and one-end fixing through simple attachment and detachment of a holder. Therefore, it is possible to easily implement hinge and fixing conditions of a test sample installed in a heating furnace using one jig, remarkably reducing time and cost consumed to install the test sample.