Abstract: The provided is a hose with an indicator (30), comprising: a hose body (30a) made of rubber that forms a fluid flow path therein; a fitting (30b) made of metal connected to an end of the hose body; and an indicator (31) in which color components are extracted by a deterioration state determination device provided with a deterioration determination model and a color change database in order to determine deterioration state of the hose body, wherein a first indicator (31a) is attached to an external surface of the hose body, a second indicator (31b) is attached to an external surface of the fitting, and the color component extracted from the first indicator is compared with the color component of the second indicator in determining deterioration state of the hose body.

Abstract: The provided is a hose with an indicator (30), comprising: a hose body (30a) made of rubber that forms a fluid flow path therein; a fitting (30b) made of metal connected to an end of the hose body; and an indicator (31) in which color components are extracted by a deterioration state determination device provided with a deterioration determination model and a color change database in order to determine deterioration state of the hose body, wherein the indicator has a plurality of color patterns (33) composed of colors that are sensitive to deterioration factors, and is attached to an external surface of the hose body so that the color patterns can be seen from each of at least two different directions when the hose is viewed from those directions.

Abstract: A method and system for easily predicting a remaining lifetime of a hose are provided. A hose remaining lifetime prediction method and a hose remaining lifetime prediction system, for predicting a remaining lifetime of a hose 1 in use, include obtaining in advance, for a hose of the same type, relationship between use time of an inner tubular rubber layer 11 at a reference temperature and a physical property value of rubber forming the inner tubular rubber layer 11, generating a thermal degradation model for the inner tubular rubber layer 11, calculating, for the hose 1 in use, reference temperature use time being use time of the inner tubular rubber layer 11 at the reference temperature until a time of the prediction, and predicting the remaining lifetime of the hose 1 in use, based on comparison between the reference temperature use time and the thermal degradation model.

Abstract: A hose remaining service life prediction method to predict a remaining service life of an in-service hose at least including an inner tube rubber layer configured containing rubber having an inside portion contacted by a fluid and having a physical property value that changes with time and including a reinforcement layer disposed further to an outside periphery than the inner tube rubber layer.

Abstract: To provide a laminated hose capable of achieving both pressure-resistant performance and oscillating durability performance. The laminated hose (1) comprises a plurality of reinforcing layers (12) laminated to the hose body (11), and each of the plurality of reinforcing layers (12) includes a reinforcing wire (13). A wire density (?) of the reinforcing layer (12) in all of the plurality of reinforcing layers (12) is 90% or more and less than 96%.

Abstract: A method and system for easily predicting a remaining lifetime of a hose are provided. A hose remaining lifetime prediction method and a hose remaining lifetime prediction system, for predicting a remaining lifetime of a hose 1 in use, include obtaining in advance, for a hose of the same type, relationship between use time of an inner tubular rubber layer 11 at a reference temperature and a physical property value of rubber forming the inner tubular rubber layer 11, generating a thermal degradation model for the inner tubular rubber layer 11, calculating, for the hose 1 in use, reference temperature use time being use time of the inner tubular rubber layer 11 at the reference temperature until a time of the prediction, and predicting the remaining lifetime of the hose 1 in use, based on comparison between the reference temperature use time and the thermal degradation model.

Abstract: Provided is a reaction force measuring device comprising: a receiving portion 12; a movable portion 13 arranged in a manner spaced from the receiving portion 12 and capable of moving toward the receiving portion 12, the movable portion having a sandwiching space a formed between itself and the receiving portion 12, into which sandwiching space a hose H can be inserted from a direction crossing a longitudinal direction of the hose; and a measuring portion 14 configured to measure a reaction force of the hose H generated when the hose is pressed and applied with a load as the movable portion 13 moves toward the receiving portion 12.

Abstract: To provide a belt-shaped fabric for hose and a hose capable of achieving an improvement in terms of workability during hose production. When spirally winding a belt-shaped fabric 14 for covering around the outer periphery of an inner tube rubber 12, and covering the outer side thereof with wire 16 and rubber 18, at least a portion of the fiber forming the belt-shaped fabric 14 is covered with rubber cement 24, whereby weave deviation is not easily generated even when the belt-shaped fabric 14 is spirally wound for covering around the outer periphery of the inner tube rubber 12. In the case where the fiber of the belt-shaped fabric 14 is impregnated with a dip liquid, the dip liquid is not easily exposed to the oxygen in the air, so that it is possible to suppress deterioration of the dip liquid.

Abstract: Provided is a reaction force measuring device comprising: a receiving portion 12; a movable portion 13 arranged in a manner spaced from the receiving portion 12 and capable of moving toward the receiving portion 12, the movable portion having a sandwiching space a formed between itself and the receiving portion 12, into which sandwiching space a hose H can be inserted from a direction crossing a longitudinal direction of the hose; and a measuring portion 14 configured to measure a reaction force of the hose H generated when the hose is pressed and applied with a load as the movable portion 13 moves toward the receiving portion 12.

Abstract: Provided is a method for predicting the remaining life of a hose and a method for diagnosing the deterioration level of a hose that can be easily performed without breaking the hose. The disclosure includes: a testing step of performing a hose bending test; and a predicting step of predicting the remaining life of a hose subject to prediction, wherein during the hose bending test, either a value of an external force required to displace a hose portion in a direction of the external force by a predetermined displacement amount, or a value of a displacement amount in a direction of the external force of the hose portion when the external force of a predetermined magnitude is exerted on the hose portion is measured, and the measured value is obtained as the test result.

Abstract: Provided is a method for predicting the remaining life of a hose and a method for diagnosing the deterioration level of a hose that can be easily performed without breaking the hose. The disclosure includes: a testing step of performing a hose bending test; and a predicting step of predicting the remaining life of a hose subject to prediction, wherein during the hose bending test, either a value of an external force required to displace a hose portion in a direction of the external force by a predetermined displacement amount, or a value of a displacement amount in a direction of the external force of the hose portion when the external force of a predetermined magnitude is exerted on the hose portion is measured, and the measured value is obtained as the test result.