V-V-100 Vu-Con ® System
Explanation:
James Vu-Con ® system to evaluate concrete and masonry structures using the Impact Echo method. The pulse echo method is based on the use of stress waves generated from the impact, which radiate through the material and are reflected by both the external surfaces and internal defects of the material. 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 in masonry structures where mortar connects walls,detect cracks, gaps and other defects. Finally, the pulse echo method is not affected by the presence of steel rebar. 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 that produce low-frequency stress waves by spreading through the material, toward other surfaces and internal defects, and are reflected back to 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 generated stress waves. Low-frequency stress waves act as a single elastic homogeneous material as they propagate towards concrete and walls.
The Vu-Con ® system provides the engineer with the most robust, reliable system for Impact Echo analysis. Without moving parts and with the application of the latest microcomputer technology; both advanced technology and reliable system are designed. The device comes with a 90 mm (3.5”) x 115 mm (4.5”) graphic display that can be conveniently displayed in daylight. This allows for a quick analysis of results on-site. It can store more than 200 Tests with time and date display. Data can be easily uploaded to a computer and transferred to reports and data analysis. Data communication occurs through RS-232 input and Windows-compatible computer software. Selecting the sensitivity level of the device allows the user to adapt to changing environmental conditions in the field.
