Transverse edge length

Since it was required by LM Glasfiber that the scanner should be able to inspect joints between the shells and the iimer beams on each side and also the joints between the shells on the leading and trailing edge of the rotor blades, the X-Unit module was designed with three different set-ups for the Y-modules, which perform the movement of the probes transverse the length of the blade. The three different set-ups of the Y-modules are ... 

In the middle of the sheet (points on the line EF) the same situation would occur if the material between C and D would be able to contract freely along the drawing rolls as this is not the case the transverse contraction will not be complete and a stress will be present in the y-direction which reduces the film thickness and causes a transverse orientation. The way in which this stress increases as a function of y from the edge towards the middle, depends on the overall geometry if /, the free length of the film between the rolls, is comparable to or greater than b. 

Figure 5.2 applies here as well with only minor modifications. The displacement of a point on the midplane of the film due to buckle formation depends only on its radial distance r from the axis of symmetry of the configuration. The nonzero components of displacement of a point on the film midplane are u r) in the radial direction and w r) in the transverse or. z—direction the displacement in the circumferential direction vanishes. These displacement components are zero in the initially flat but uniformly stressed configuration of the material. Upon formation of the buckle, the normal force tr r) in the radial direction, measured per unit length in the circumferential direction, acting on any cross-section r = constant is reduced in magnitude from its initial value < O The reduction in force at the edge of the... 

In this calibration, the characteristic length. scale is one-half the bond thickness h in Fig. 2). One particularly convenient choice for the characteristic stress plane stress (i.e. stress directed parallel to the interface) found at the center of the layer in a region remote from the stress-free edge. With this definition for a, the same K calibration relation applies to transverse tensile loading and to uniform adhesive shrinkage. This characteristic stress is related to the nominal, applied transverse (butt tensile) stress d for an adhesive layer with Poisson s ratio v by... 

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