A drift is inserted into a first end of a first pipe and a first actuator is pressed against a second end of the first pipe. A valve in the first actuator is opened and a valve in a second actuator is closed. When a vacuum is turned on, suction is applied to the first actuator, drawing the drift through the first pipe. The drift is removed from the second end and inserted into a second end of a second pipe. The second actuator is pressed against a first end of the second pipe. The valve in the first actuator is closed, the valve in the second actuator is opened, and suction is applied, drawing the drift through the second pipe. The back-and-forth process is repeated for each of a number of pipes. If the drift encounters an obstruction, the pipe can be set aside for further inspection.

A derailleur hanger alignment pre-checking device, for use on a bicycle having a cassette comprising multiple sprockets and a rear derailleur having a derailleur cage, includes an elongated body having a longitudinal axis and an elongated planar surface disposed substantially parallel to the longitudinal axis, and including a handle portion and a hanger portion. The hanger portion includes a slot cavity having an arcuate rear wall, the slot cavity being configured to receive a portion of a sprocket of the cassette. The slot cavity and planar surface are configured so that when a sprocket is received in the slot cavity the planar surface will be positioned facing a planar surface of the derailleur cage.

A template for determining a stretching ratio of a film sample of a film spanning a round bale includes a template body which has a supporting side and an oppositely arranged working side. The template body includes an outline edge defining a perimeter of a film sample. Two slots are formed in the template body for applying markings to the film, the two slots being arranged parallel to each other at a first distance. A contact marking is arranged on the working side of the template body. A scale for displaying the stretching ratio of the film sample is arranged on the working side at a predetermined distance from the contact marking.

A template for determining a stretching ratio of a film sample of a film spanning a round bale includes a template body which has a supporting side and an oppositely arranged working side. The template body includes an outline edge defining a perimeter of a film sample. Two slots are formed in the template body for applying markings to the film, the two slots being arranged parallel to each other at a first distance. A contact marking is arranged on the working side of the template body. A scale for displaying the stretching ratio of the film sample is arranged on the working side at a predetermined distance from the contact marking.

A coater cup deformation testing device includes a supporting board, a first plate and a second plate. The first plate is located on a first side surface of the supporting board. The first plate is circular and has a first diameter. The second plate is located on the first plate or on a second side surface of the supporting board. The second side surface is opposite to the first side surface. The second plate is circular and has a second diameter less than the first diameter. An area of each of the first and second plates is less than an area of the supporting board. A projection of each of the first and second plates on the supporting board is formed within the supporting board.

A coater cup deformation testing device includes a supporting board, a first plate and a second plate. The first plate is located on a first side surface of the supporting board. The first plate is circular and has a first diameter. The second plate is located on the first plate or on a second side surface of the supporting board. The second side surface is opposite to the first side surface. The second plate is circular and has a second diameter less than the first diameter. An area of each of the first and second plates is less than an area of the supporting board. A projection of each of the first and second plates on the supporting board is formed within the supporting board.

A measuring system and method that computes and analyzes sensor data fused with multiple mechanical and thermally induced strain measurements is provided. Further, the measuring system and method realizes physics-based relations between sensor readings due to mechanical and thermal sources by optimally de-coupling a total strain into its mechanical and thermal components. The measuring system and method also auto-tunes coefficients involved in the optimal de-coupling equations using sensor specification data and previous system test results for initialization.

A measuring system and method that computes and analyzes sensor data fused with multiple mechanical and thermally induced strain measurements is provided. Further, the measuring system and method realizes physics-based relations between sensor readings due to mechanical and thermal sources by optimally de-coupling a total strain into its mechanical and thermal components. The measuring system and method also auto-tunes coefficients involved in the optimal de-coupling equations using sensor specification data and previous system test results for initialization.

A structure for strain detection is provided with a ceramic main body which is attached to a detection target, in which strain is to be detected, and a stress concentrated section which is formed in the main body and which is fractured at a predetermined strain or greater. Assuming the dimension of the entire main body in one direction is represented by Lm and the dimension of the stress concentrated section in the one direction is represented by Lc, then it holds that Lc<Lm. The stress concentrated section is constituted by a thin-walled portion in the one direction.

The invention relates to a method to test friction resistance at inner and outer sidewalls of pipe pile through in-situ test. The method comprises embedding a strain sensor at inner or outer sidewalls of pipe pile to measure strain variation generating on pipe pile body under the action of load; carrying out static load test with the soil plug remaining in the pipe pile to obtain the strain variation ε.sub.p1j,i of the pipe pile body at the i.sup.th soil layer; taking out the soil plug remaining in the pipe pile and carrying out static load test to obtain the strain variation ε.sub.p2j,i of the pipe pile body at the i.sup.th soil layer; and obtaining the friction respectively at the outer and inner sidewalls of the pipe pile at the i.sup.th soil layer according to the measured strain variation, ε.sub.p1j,i and ε.sub.p2j,i.