Abstract: A cylindrical shaped circumferential rib is integrally formed as a base protruding on the outer circumferential surface of a resin pipe. An annular sealant is externally fitted on one end portion of a metal member which is inserted in and fixed to the base to interpose the sealant between the one end portion and the inner circumferential surface of the base, allow the outer circumferential surface of the one end portion to press and restrict the movement of the sealant toward the inner side in the radial direction and toward the trailing end side of the one end portion in the insertion direction, and allow the inner circumferential surface of the base to press and restrict the movement of the sealant toward the outer side in the radial direction and toward the insertion direction distal end side of the one end portion.

Abstract: A metal flange having unevenness on a surface of an insertion hole is disposed in an insert portion in a cavity body of a mold. A resin pipe is formed by curing molten resin injected into a cavity. The metal flange is fitted to a fixing groove continuous over an entire circumference of an outer circumferential surface of the pipe in a circumferential direction. An outer circumferential surface of the fixing groove enters the unevenness on the surface of the insertion hole. A circumferential rib is formed on at least one side of both ends of the flange in a longitudinal direction of the resin pipe, abuts on an end surface of the flange, has a diameter larger than an outer diameter of the pipe, and is continuous over the entire circumference of the outer circumferential surface of the pipe in the circumferential direction.

Abstract: A resin material, in which the elongation at break in an environmental condition at a predetermined temperature of 100° C. or higher and 150° C. or lower is 50% or more, a content of a plasticizer is 3 mass % or less with respect to the total mass of the resin material, a strength at break in the environmental condition at this predetermined temperature is 5 MPa or more, the elongation at break is 500% or less, and a 10% modulus is 3 MPa or less, is formed into a tubular form and used as an inner surface layer, an intermediate layer, and an outer surface layer of a hose, and components of an air conditioner are connected through the hose. Such resin material, and also a hose including the resin material, which are mainly used for an air conditioner installed in a vehicle, have improved durability in a high temperature environment.

Abstract: A test sample of a vulcanized rubber material is placed under a preset placement condition in a fixing frame in a test tank having a predetermined ozone concentration, and detection data is acquired by detecting, over time, with a laser sensor disposed facing a surface of the test sample that has been placed in the test tank, a distance from the laser sensor to the surface of the test sample; and determining a change in a surface state of the test sample between a plurality of points in time by analyzing, with a computation device, the detection data that has been acquired. Such evaluation method and evaluation system for evaluating ozone deterioration of a vulcanized rubber material can accurately determine a change over time in ozone deterioration while reducing working man-hours.

Abstract: A test sample of a vulcanized rubber material is placed under a preset placement condition in a fixing frame in a test tank having a predetermined ozone concentration, and digital image data is acquired by capturing at a fixed point, over time, with at least one camera device, images of a surface of the test sample that has been placed in the test tank; and determining a change in a surface state of the test sample between a plurality of points in time by analyzing, with a computation device, the image data that has been acquired. Such evaluation method for evaluating ozone deterioration of a vulcanized rubber material can accurately determine a change over time in ozone deterioration while reducing working man-hours.

Abstract: Provided is a piping system for an air conditioner installed in a vehicle that can achieve appropriate weight reduction while ensuring appropriate pressure resistance as the piping system as a whole. A circulation path that connects component devices of an air conditioner (8) in an annular shape to circulate a refrigerant (C) is formed by each pipe body extending between the component devices. At least one of the pipe bodies includes: a resin hose (2) embedded with a non-metal reinforcing material (3f) or a resin pipe (5) embedded with a non-metal reinforcing material (6f), and the resin pipe bodies (2), (5) are employed in 50% or more of a total length of each of the pipe bodies constituting the circulation path.

Abstract: Provided is a piping system for an air conditioner installed in a vehicle that can achieve appropriate weight reduction while ensuring appropriate pressure resistance as the piping system as a whole. A circulation path that connects component devices of an air conditioner (8) in an annular shape to circulate a refrigerant (C) is formed by each pipe body extending between the component devices. At least one of the pipe bodies includes: a resin hose (2) embedded with a non-metal reinforcing material (3f) or a resin pipe (5) embedded with a non-metal reinforcing material (6f), and the resin pipe bodies (2), (5) are employed in 50% or more of a total length of each of the pipe bodies constituting the circulation path.

Abstract: A wave receiving plate is pivotably supported by a support device in the wave force generation system and includes a flexible plate in at least a part of the wave receiving plate.

Abstract: A conveyor belt management system is capable of determining a suitable replacement period of the conveyor belt. Data of an amount of wear of an upper cover rubber of the conveyor belt installed at a use site is input into a server via an input unit. A calculation unit is configured to calculate a remaining service life of the conveyor belt based on the input data and, stored in a storage unit, a belt specification database and a tolerance range database in which a tolerance range is input in advance for the amount of wear per belt specification; and calculate an expected service life of the conveyor belt before use of the conveyor belt based on a correlation between a use condition and belt specifications of the conveyor belt used up until present, the use condition of the conveyor belt, and the specifications of the conveyor belt.

Abstract: A resin material, in which the elongation at break in an environmental condition at a predetermined temperature of 100° C. or higher and 150° C. or lower is 50% or more, a content of a plasticizer is 3 mass % or less with respect to the total mass of the resin material, a strength at break in the environmental condition at this predetermined temperature is 5 MPa or more, the elongation at break is 500% or less, and a 10% modulus is 3 MPa or less, is formed into a tubular form and used as an inner surface layer, an intermediate layer, and an outer surface layer of a hose, and components of an air conditioner are connected through the hose. Such resin matarial, and also a hose including the resin materail, which are mainly used for an air conditioner installed in a vehicle, have improved durability in a high temperature environment.

Abstract: In an adhesive selection method, test data is acquired by subjecting an adhesion complex, obtained by integrally bonding one material and an other material that are heterogeneous using an adhesive, to a shear test, in which a tensile shear load is applied to the adhesion complex in a direction that causes shear deformation in the adhesive, until adhesive failure takes place. Based on the test data, a plurality of two- or three-dimensional FEM analysis models of the adhesion complex with varied adhesives are constructed. On each of the analysis models, a simulation is performed in which a tensile shear load is applied. Based on the stresses and locations of the stresses generated in each of the analysis models in the course of the, the adhesive for binding one member made of the one material and the other member made of the other material is selected from among the adhesives.

Abstract: A conveyor belt monitoring system includes an imaging device which sequentially images a longitudinal predetermined range of a conveyor belt in running from above the conveyor belt. Image data captured by the imaging device is displayed in a monitor, and then is sequentially input into a control unit as detection data. The control unit causes a meander suppressing device to reduce a meander width of the conveyor belt on the basis of the image data.

Abstract: Provided is a rubber wear testing device including a holding portion for holding a test sample of rubber, and a compression bonding mechanism for applying an additional force oriented to a circular circumferential surface of a rotation body rotating such that the test sample is pressed to the circular circumferential surface at a predetermined fixed position and the movement of the test sample in a direction opposite to the additional force is always allowed.

Abstract: A test sample of a vulcanized rubber material is placed under a preset placement condition in a fixing frame in a test tank having a predetermined ozone concentration, and digital image data is acquired by capturing at a fixed point, over time, with at least one camera device, images of a surface of the test sample that has been placed in the test tank; and determining a change in a surface state of the test sample between a plurality of points in time by analyzing, with a computation device, the image data that has been acquired. Such evaluation method for evaluating ozone deterioration of a vulcanized rubber material can accurately determine a change over time in ozone deterioration while reducing working man-hours.

Abstract: A test sample of a vulcanized rubber material is placed under a preset placement condition in a fixing frame in a test tank having a predetermined ozone concentration, and detection data is acquired by detecting, over time, with a laser sensor disposed facing a surface of the test sample that has been placed in the test tank, a distance from the laser sensor to the surface of the test sample; and determining a change in a surface state of the test sample between a plurality of points in time by analyzing, with a computation device, the detection data that has been acquired. Such evaluation method and evaluation system for evaluating ozone deterioration of a vulcanized rubber material can accurately determine a change over time in ozone deterioration while reducing working man-hours.

Abstract: A hose to be evaluated is installed on a fixing frame in a preset shape, and a strain gauge and markers are attached to a surface of the hose. During a course of application of predetermined internal pressure to the hose, strain data is acquired using the strain gauge and an image of an external shape of the hose is captured using a camera device to acquire image data. Based on the strain data and the image data acquired, a change in the shape of the hose between a plurality of time points at identical internal pressure is determined. Such hose fatigue resistance evaluation system can determine changes in the degree of deformation of a hose over time due to repeated application of internal pressure.

Abstract: An abrasion tester and testing method. The testing method comprises setting a running speed of a rubber sample fixed to an outer surface of an annular belt member stretched between a pair of pulleys to a desired speed; setting a pressing load applied by a contact member to a desired pressing load via an anchor member; selecting, as the contact member, a desired contact member from a plurality of types of contact members with different rubber sample surface contacting tip specifications; pressing the contact member against the surface of the rubber sample running by the rotation of the pulleys; and obtaining an amount of scratch abrasion of the rubber sample using a calculation unit on the basis of a cross-sectional shape of the surface of the rubber sample detected by a shape sensor.

Abstract: A hose to be evaluated is installed on a fixing frame in a preset shape, and a strain gauge and markers are attached to a surface of the hose. During a course of application of predetermined internal pressure to the hose, strain data is acquired using the strain gauge and an image of an external shape of the hose is captured using a camera device to acquire image data. Based on the strain data and the image data acquired, a change in the shape of the hose between a plurality of time points at identical internal pressure is determined. Such hose fatigue resistance evaluation system can determine changes in the degree of deformation of a hose over time due to repeated application of internal pressure.

Abstract: A hose to be evaluated is installed on a fixing frame in a preset shape, and a strain gauge and markers are attached to a surface of the hose. During a course of application of predetermined internal pressure to the hose, strain data is acquired using the strain gauge and an image of an external shape of the hose is captured using a camera device to acquire image data. Based on the strain data and the image data acquired, a change in the shape of the hose between a plurality of time points at identical internal pressure is determined. Such hose fatigue resistance evaluation method can determine changes in the degree of deformation of a hose over time due to repeated application of internal pressure.

Abstract: A conveyor belt management system is capable of determining in detail the state of a conveyor belt. A state of the conveyor belt is monitored by a calculation unit based on data of an indicator indicating a status of a belt conveyor device and data of an indicator indicating a use environment of the conveyor belt installed on a belt conveyor device; at least one data from an amount of wear of an upper cover rubber, an impact force acting on the conveyor belt, a tensile force, an indicator indicating a state of a core, and an indicator indicating a state of an endless portion input to the server by the input unit; and a belt specification database and a tolerance range database in which a tolerance range for each of the input items is input in advance per belt specification stored in a storage unit.