Abstract: A vibration test device (100) is a vibration test device for testing vibration of a pipeline (10) attached to a structure. The vibration test device includes a plurality of support members (101a, 101b) that are joined to a wall surface with a predetermined gap therebetween and support the pipeline, a first fixing member (102a) that fastens the pipeline to a first support member at a position where one end of the pipeline protrudes from the first support member, a second fixing member (102b) that fastens the pipeline to a second support member at a position where another end of the pipeline protrudes from the second support member, a vibration-applying portion (103) that applies vibration force to one of the support members, a detection unit (104) that detects vibration of the pipeline, and a measurement unit (105) that measures a vibration characteristic of the pipeline.

Abstract: A vibration reproduction device (100) is a vibration reproduction device that reproduces vibration of a pipeline (10) attached to a structure, and includes: a plurality of support members (101a, 101b) for supporting the pipeline; a fixing members (102a, 102b) for fastening the pipeline to the support members; support bases (103a, 103b) that are joined to the support members and to which a vibration force is applied; and viscoelastic members (106a, 106b) provided between the support bases and the ground.

Abstract: A U-bolt (10) according to the present disclosure includes a pair of shaft parts (11) aligned in a first direction and extending in a second direction orthogonal to the first direction; a bridge part (12) which connects one ends of each of the pair of shaft parts (11); and a first pair of strain gauges (14) which are stuck to at least one shaft part (11) of the pair of shaft parts (11) to face each other with the shaft part (11) sandwiched in the first direction, and which output a signal corresponding to bending of the shaft part (11) in the second direction.

Abstract: A U-bolt mounting jig (100) to mount a U-bolt (20) used to fix a pipeline (10) to an installation support member (300) includes a first fitting member (101a) and a second fitting member (101b) that fit over opposite end portions of the U-bolt (20), the opposite end portions being inserted through bolt holes provided on the installation support member (300), and a holding member (102) that holds the first fitting member (101a) and the second fitting member (101b) such that a straight line connecting the opposite end portions is parallel to the installation support member (300).

Abstract: An audio spot forming system (S) is an audio spot forming system which transmits an alert sound to a vehicle traveling on a road, the audio spot forming system including a first parametric speaker (1) configured to emit a sideband wave, and a second parametric speaker (2) configured to emit a carrier wave, in which the sideband wave and the carrier wave are caused to intersect with each other on the road to form an audio spot.

Abstract: A U-bolt installation jig (100) includes: a first fixing member (101a) and a second fixing member (101b) opposing each other, with a predetermined spacing therebetween, while being perpendicular to an attachment member (300) , the first and second fixing members being brought into contact with side portions of a U-bolt (20); a stretchable member (102) fitted to the first fixing member (101a) and the second fixing member (101b) while being parallel to the attachment member (300), the stretchable member being brought into contact with a center portion of the U-bolt (20); and a first joint member (103a) and a second joint member (103b) joined to the first fixing member (101a) and the second fixing member (101b) , the first and second joint members sandwiching the first fixing member (101a) and the second fixing member (101b) to finely adjust the predetermined spacing.

Abstract: In an audio spot formation device D including a speaker unit 1 and a support stand 2 that supports the speaker unit 1, the speaker unit 1 includes a plurality of parametric speakers 1a, 1b, 1c and 1d that divide a sound wave into a carrier wave and a sideband wave and radiate the carrier wave and the sideband wave, and a speaker disposition unit 10 in which the plurality of speakers 1a, 1b, 1c and 1d are disposed, the speaker disposition unit 10 is attached to the support stand 2 at a support unit P, at least one of a height of the support stand 2, an angle of attachment of the speaker disposition unit 10 at the support unit P and a direction of at least one parametric speaker of the plurality of parametric speakers 1a, 1b, 1c and 1d is adjustable, and a position at which an audio spot is formed is adjusted via the adjustment.

Abstract: A measurement apparatus (100) includes a laser light source (11), a beep splitter (121), an optical path converter (122), and a light reception unit (111). The beep splitter (121) branches laser light emitted from the laser light source (11) into first branch light and second branch light and irradiates a target object (1) with the first branch light. The optical path converter (122) converts a direction of the second branch light to a direction in which a structure (2) is irradiated with the second branch light and irradiates the structure (2) with the second branch light. The light reception unit (111) receives first reflected light obtained in a manner that the first branch light is reflected by the target object (1) and second reflected light obtained in a manner that the second branch light is reflected by the structure (2).