VV-100 Vu-Con® System “

Description: The James Vu-Con® System uses the impact echo method to evaluate concrete and masonry structures. The impact echo method is based on the use of stress waves generated from impact, which propagate through the material and are reflected by both the material's outer surfaces and internal defects. This method can be used to make precise non-destructive thickness measurements in concrete slabs and slabs and to find internal defects such as honeycomb formation, weathering and stratification. It can measure thickness, detect cracks, voids and other defects in masonry structures where mortar connects walls. Finally, the impact echo method is not affected by the presence of steel reinforcements. The method works by creating a short-term mechanical effect on the surface of the material being studied. This is usually accomplished by small steel balls producing low-frequency stress waves that propagate through the material to other surfaces and internal defects and are reflected back onto the surface used for testing (see diagram below). By recording and analyzing the vibration from the mechanical impact on the surface, thickness and other physical properties (referring to the previous paragraph) can be determined. The advantage of using the pulse method rather than other classical ultrasonic techniques; is the low frequency and long wavelength of the stress waves produced. As the low-frequency stress waves propagate through the concrete and masonry, it behaves as a single elastic homogeneous material.

The Vu-Con® System provides the engineer with the most robust, reliable system for pulse echo analysis. With no moving parts and the application of the latest microcomputer technology; both advanced technology and a reliable system have been designed. The device comes with a 90 mm (3.5”) x 115 mm (4.5”) graphic display that can be viewed comfortably in daylight. This allows results to be analyzed quickly on site. It can store more than 200 tests with time and date display. Data can be easily uploaded to a computer and exported to reports and data analysis. Data communication takes place via RS-232 port and Windows compatible PC software. Selecting the sensitivity level of the device allows the user to adapt to changing environmental conditions in the field.