DATASET FOR: High-Quality Freeform Machining of Chemically Strengthened Glass Using Spark Assisted Chemical Engraving
Description
This dataset contains the raw experimental data and microscopic images supporting the findings of the manuscript "High-Quality Freeform Machining of Chemically Strengthened Glass Using Spark Assisted Chemical Engraving." The research investigates the application of Spark Assisted Chemical Engraving (SACE) for the high-quality freeform cutting of Chemically Strengthened Glass (CSG), specifically Corning® Gorilla Glass 3. The data was generated using a custom Response Surface Methodology (RSM) to systematically evaluate the effects of key SACE parameters (Voltage, Cutting Speed, Electrolyte Concentration) on final cut quality. The dataset includes the complete experimental design (32 runs) and the corresponding measured responses used for statistical analysis and model generation in the manuscript. The raw microscopic images provide visual evidence of the cut quality under various machining conditions.
Files
Steps to reproduce
The data in this dataset were generated by following the experimental and characterization protocol outlined below. 1. Materials and Setup: Workpiece: Commercially available Corning® Gorilla Glass 3 (GG3) samples with dimensions of 25 mm × 25 mm × 0.55 mm. Tool Electrode: A 300 µm diameter Tungsten Carbide (WC) twist-drill bit. Electrolyte: Aqueous solutions of potassium hydroxide (KOH). Apparatus: A custom-built, three-axis Spark Assisted Chemical Engraving (SACE) machine developed at the École de technologie supérieure (ÉTS), Montréal. 2. Experimental Procedure: The GG3 workpiece was submerged horizontally in the KOH electrolyte. The SACE process was initiated to perform freeform cuts according to the experimental design. 3. Process Parameters: The experiments were conducted based on a custom Response Surface Methodology (RSM) split-plot design. The specific parameter combination for each experimental run is detailed in the accompanying Excel file (SACE_CSG_Experimental_Data.xlsx). Variable Parameters: Voltage (V): Varied between 33 V, 35 V, and 37 V. Cutting Speed (S): Varied between 5, 10, and 15 µm/s. KOH Concentration (C): Varied between 24, 27, and 30 wt.%. Constant Parameters: Tool Rotation: 800 rpm (counter-clockwise). Electrolyte Flow Rate: 180 ml/min. 4. Data Acquisition and Characterization: Following machining, the samples were analyzed to obtain the response data: Cut edge characteristics (Chipping, Cut Kerf, Edge Roundness, Surface Distance Index, Chipping Severity) were measured from optical micrographs acquired with a Keyence VHX-7000 digital microscope. Cut surface roughness (Sa) was measured from topographical data acquired with a Lext OLS4100 laser confocal microscope. Image analysis was performed using ImageJ and the official Lext software. 5. Further Information: For a complete description of the methodology, experimental setup schematics, and statistical analysis, please refer to the associated publication: Delbari, S.A., et al., "High-Quality Freeform Machining of Chemically Strengthened Glass Using Spark Assisted Chemical Engraving."
Institutions
- Ecole de technologie superieure