Linear scanner with rotating coupling fluid

1. An inspection arrangement for inspecting an elongate object having a plurality of planar side surfaces, the arrangement including:

a housing providing an interior space within which inspection is to occur, the housing having an entrance and an exit that are aligned on an axis for respective movement of the object relative to the interior space;

a plurality of ultrasonic sensor arrays disposed about the axis to direct ultrasonic sensory pluses within the housing, each sensor array having a plurality of ultrasonic sensors with each ultrasonic sensor being positioned to direct a respective ultrasonic sensory pulse in a respective direction within the interior space;

a fluid delivery device for delivering a coupling fluid into the interior space, the coupling fluid engages the elongate object and transmits the ultrasonic sensory pluses to the elongate object; and

a plurality of redirecting elements associated with the plurality of ultrasonic sensor arrays, the number of redirecting elements being equal to the number of planar side surfaces of the elongate object, each redirecting element positioned such that ultrasonic sensory pulses from the respective ultrasonic sensor array proceed through the respective redirecting element, each redirecting element for redirecting at least some of the ultrasonic sensory pulses to proceed along a different direction and including at least one surface redirecting at least some of the ultrasonic pulses such that the ultrasonic pulses emerge from the redirecting element and proceed along parallel directions toward a respective planar side surfaces of the elongate object.

2. An inspection arrangement as set forth within claim 1 , wherein for each sensor array the plurality of ultrasonic sensors are positioned to direct the respective ultrasonic sensory pulses in respective directions for inspecting an elongate object having an arcuate exterior surface, and each redirecting element being configured to redirect the ultrasonic pulses proceeding there through for inspecting an elongate object having a planer surface.

3. An inspection arrangement as set forth within claim 1 , wherein each ultrasonic sensor array has a convex face, and each redirecting element has a concave face mating to the convex face of a respective sensor array.

4. An inspection arrangement as set forth within claim 3 , wherein for each redirecting element the concave face is a first concave, each redirecting element has a second concave face.

5. An inspection arrangement as set forth within claim 1 , wherein elongate object has a square cross-section.

6. An inspection arrangement as set forth within claim 1 , wherein the redirecting elements are configured to direct the ultrasonic sensory pluses to generally impinge upon a respective planar side surface of the object in a perpendicular manner to the planar surface.

7. A method of providing an inspection arrangement for inspecting an elongate object having a plurality of planar side surfaces, the method including:

providing a housing with an interior space within which inspection is to occur, the housing having an entrance and an exit that are aligned on an axis for respective movement of the object relative to the interior space;

providing a plurality of ultrasonic sensor arrays disposed about the axis to direct ultrasonic sensory pluses within the housing, each sensor array having a plurality of ultrasonic sensors with each ultrasonic sensor being positioned to direct a respective ultrasonic sensory pulse in a respective direction within the interior space;

providing a fluid delivery device for delivering a coupling fluid into the interior space, the coupling fluid engages the elongate object and transmits the ultrasonic sensory pluses to the elongate object; and

providing a plurality of redirecting elements associated with the plurality of ultrasonic sensor arrays, the number of redirecting elements being equal to the number of planar side surfaces of the elongate object, each redirecting element positioned such that ultrasonic sensory pluses from the respective ultrasonic sensor array proceed through the respective redirecting element, each redirecting element for redirecting at least some of the ultrasonic sensory pulses to proceed along a different direction and including at least one surface redirecting at least some of the ultrasonic pulses such that the ultrasonic pulses emerge from the redirecting element and proceed along parallel directions toward a respective planar side surfaces of the elongate object.

8. A method as set forth within claim 7 , wherein the step of providing a plurality of ultrasonic sensor arrays includes providing each sensor array such that the plurality of ultrasonic sensors are positioned to direct the respective ultrasonic sensory pulses in respective directions for inspecting an elongate object having an arcuate exterior surface, and the step of providing the plurality of redirecting elements includes providing each redirecting element to be configured to redirect the ultrasonic pulses proceeding there through for inspecting an elongate object having a planer surface.

9. A method as set forth within claim 7 , wherein the step of providing a plurality of ultrasonic sensor arrays includes providing each sensor array to have a convex face, and the step of providing the plurality of redirecting elements includes providing each redirecting element to be configured to have a concave face mating to the convex face of a respective sensor array.

10. A method as set forth within claim 9 , wherein the step of providing the plurality of redirecting elements includes providing each redirecting element to be configured such that the concave face is a first concave, each redirecting element has a second concave face.

11. A method as set forth within claim 7 , wherein elongate object has a non-circular cross-section.

12. A method as set forth within claim 7 , wherein elongate object has a square cross-section.

13. A method as set forth within claim 7 , wherein the step of providing the plurality of redirecting elements includes providing each redirecting element to be configured to direct the ultrasonic sensory pluses to generally impinge upon a respective planar side surface of the object in a perpendicular manner to the planar surface.