An apparatus for measuring wafer bonding strength may include a wafer fixer and measuring unit. The wafer fixer may be configured to fix bonded wafers. The measuring unit may be configured to measure bonding strength of the bonded wafers. The measuring unit may include a blade, a driver and a sensor. The blade may apply a force to an interface between the bonded wafers to separate the bonded wafers from each other. The driver may provide the blade with a driving force. The sensor may measure the force applied to the blade.

An apparatus for measuring wafer bonding strength may include a wafer fixer and measuring unit. The wafer fixer may be configured to fix bonded wafers. The measuring unit may be configured to measure bonding strength of the bonded wafers. The measuring unit may include a blade, a driver and a sensor. The blade may apply a force to an interface between the bonded wafers to separate the bonded wafers from each other. The driver may provide the blade with a driving force. The sensor may measure the force applied to the blade.

An impeller high-precision static performance simulation device, a testing machine, and an impeller performance simulation testing method are provided. In the device, a centrifugal force acting on a blade is simulated by an upper clamper, a lower clamper and a tension sensor. In the process of carrying out a simulation test to the performance of the impeller, a centrifugal force effect of an air compressor impeller is simulated by a static pulling force, to accurately simulate and evaluate the service condition of the impeller under the action of a high-precision static force.

The present invention relates, in part, to systems for characterizing force (e.g., friction, and wear). In one embodiment, a tribometer allows for wear testing of samples in a high throughput manner. A counterface is used to apply force on the surface of the sample. A carousel provides for the rapid exchange of new for old counterfaces in the tribometer test head, thereby enabling the use of a new counterface for each new wear test without the need for operator interaction.

An impeller high-precision static performance simulation device, a testing machine, and an impeller performance simulation testing method are provided. In the device, a centrifugal force acting on a blade is simulated by an upper damper, a lower damper and a tension sensor. In the process of carrying out a simulation test to the performance of the impeller, a centrifugal force effect of an air compressor impeller is simulated by a static pulling force, to accurately simulate and evaluate the service condition of the impeller under the action of a high-precision static force.

The amount of dietary fiber in a sample can be quantified by dissoluting the sample to produce a dietary fiber solution and then centrifuging the dietary fiber solution to produce a pellet and a supernatant liquid. After separating the supernatant liquid from the pellet, the pellet can be analyzed to determine a content of non-dietary fiber components in the pellet. The dietary fiber content in the pellet can be determined from the content of the non-dietary fiber components in the pellet. By using centrifugation to help isolate the dietary fiber in the sample, fiber loss may be minimized, leading to a more accurate determination of the content of dietary fiber in the sample.

An ultrasonic machine tool comprises a stand that can be attached to a base plate. The machine furthermore has a vibration generator by means of which a working member can be driven, wherein the vibration generator is borne by a slide displaceably guided in the longitudinal direction of the stand. The slide is in turn borne by a linear drive attached to the stand. The vibration generator is located in the alignment of the adjustment path of the linear drive.

An ultrasonic machine tool comprises a stand that can be attached to a base plate. The machine furthermore has a vibration generator by means of which a working member can be driven, wherein the vibration generator is borne by a slide displaceably guided in the longitudinal direction of the stand. The slide is in turn borne by a linear drive attached to the stand. The vibration generator is located in the alignment of the adjustment path of the linear drive.

Provided is a repeated moment generation device that includes: a principal shaft; principal bearing members; lever members; principal eccentric weight rotors; auxiliary eccentric weight rotors; and drive means (such as a motor) for causing the principal eccentric weight rotors and the auxiliary eccentric weight rotors to synchronously rotate. Eccentricity directions of the principal eccentric weight rotors are different from each other by 180 degrees around shaft centers of shaft bodies thereof, eccentricity directions of the auxiliary eccentric weight rotors are different from each other by 180 degrees around shaft centers of shaft bodies thereof, and the eccentricity direction of the principal eccentric weight rotor and the eccentricity direction of the auxiliary weight rotor located on the same side as the principal eccentric weight rotor with respect to the principal shaft 1 are different from each other by 180 degrees around the shaft centers of the shaft bodies thereof.

An integrated machine for fully automatic core drilling and direct pulling is disclosed, including a housing, a support member, a pulling mechanism, and a pulling joint. The pulling joint is configured to hold a top of a test piece for pulling testing. The pulling mechanism includes a worm gear motor, a drive screw set at an output end of the worm gear motor, a drive support rod, a tension sensor set at the other end of the drive support rod, an adjustable link block at one end connected to the tension sensor, and a pulling screw connected to the other end of the adjustable link block. The integrated machine has a simple structure, lightweight equipment, which can be handheld and easy to operate, thus do not need to have operating experience, thereby realizing core drilling and direct pulling test in one.