Perpendicularity Verification Device for Concrete Specimens
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Solution Overview
Problem
Current methods for verifying the perpendicularity of concrete test specimens in compression testing are time-consuming and provide inconsistent results, lacking a specific device to ensure accurate alignment according to ASTM Standard C39.
Innovation Solution
A perpendicularity verification device comprising a unitary planar sheet with a vertical straight side edge and a horizontal straight bottom edge, positioned on the testing machine's platen to verify the specimen's perpendicularity by ensuring minimal gaps between the device and the specimen, using a gap measurement tool to confirm alignment within 0.5 degrees of perpendicularity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lab technicians use a combination of levels, straight edges and gauges to determine perpendicularity, then perpendicularity verification is possible, but the process becomes time consuming and provides inconsistent results
Solution Approach 1:
The patent combines multiple separate verification tools (levels, straight edges, gauges) into a single integrated perpendicularity verification device. The device features a base with a straight edge and a vertical edge that forms a precise 90-degree angle, eliminating the need to use multiple separate tools and thereby reducing verification time while maintaining accuracy.
Solution Approach 2:
The patent introduces a specialized perpendicularity verification device as an intermediary tool between the specimen and the verification process. This device includes a base that rests on the platen and a vertical edge that contacts the specimen, providing a reliable reference for perpendicularity checking and eliminating the inconsistency associated with using multiple ad-hoc tools.
2Reliability
If multiple separate tools are used for perpendicularity verification, then verification can be performed, but the device complexity increases and operation becomes more difficult
Solution Approach 1:
The patent merges the functions of multiple separate verification tools into a single integrated device. The perpendicularity verification device comprises a base with a straight edge and a vertical edge formed as one unit, eliminating the need for multiple separate tools and thereby reducing device complexity while improving operational reliability.
Solution Approach 2:
The perpendicularity verification device is designed to perform multiple functions: the base rests on the platen to establish a reference plane, the straight edge verifies alignment, and the vertical edge contacts the specimen to check perpendicularity. This multi-functional design reduces the number of separate tools needed while maintaining verification consistency.
3Measurement precision
If traditional verification methods are used, then perpendicularity can be checked, but the ease of operation is reduced due to the need for multiple tools and procedures
Solution Approach 1:
The patent combines multiple verification operations into a single device that can be positioned and used in one straightforward action. The perpendicularity verification device integrates the base, straight edge, and vertical edge into a single unit that contacts the specimen at one location, simplifying the operation while maintaining measurement precision.
Solution Approach 2:
The perpendicularity verification device is designed to be self-aligning and self-verifying. Once positioned on the platen with the base, the device's geometry automatically provides the reference for perpendicularity checking, reducing the skill level and complexity required for accurate measurement.
Data Source
AI summary
A perpendicularity verification device is provided for verifying perpendicularity of a concrete test specimen in a testing machine. The device comprises a unitary planar sheet. The sheet has an elongate vertical straight side edge and a horizontal straight bottom edge. The side and bottom edges are perpendicular to one another. A corner notch is provided between the side and bottom edges. In use, the bottom edge rests on a platen of the testing machine so that the notch circumvents a retaining cup of the testing machine and the vertical edge rests against the test specimen.