Flexural Rigidity Measurement Without Sheet Size Processing
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Solution Overview
Problem
Existing flexural-rigidity measuring apparatuses require sheets to be processed to a predetermined size, limiting their ability to measure flexural rigidity accurately without size adjustments.
Innovation Solution
A flexural-rigidity measuring apparatus incorporating an ultrasonic device, an electromagnetic induction device, and a near-infrared spectroscopic device that measure various parameters of a sheet without needing it to be of a specific size, using ultrasonic waves, electromagnetic induction, and near-infrared light to derive flexural rigidity through a controller and derivation unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the sheet is processed to a predetermined size using existing measuring apparatus, then the measurement can be performed, but the measurement process becomes time-consuming and requires additional processing steps
Solution Approach 1:
The patent replaces mechanical size-adjustment methods with a combination of ultrasonic, electromagnetic induction, and near-infrared spectroscopic measurements. The controller integrates data from these three measurement systems to calculate flexural rigidity directly from the measured parameters (basis weight, thickness, moisture content, ash content) without requiring mechanical processing of the sheet to predetermined dimensions.
2Reliability
If multiple measurement devices are integrated, then comprehensive parameters can be measured simultaneously, but the device structure becomes more complex
Solution Approach 1:
The patent merges three distinct measurement devices (ultrasonic device for basis weight and thickness, electromagnetic induction device for moisture content and ash content, and near-infrared spectroscopic device for compositional analysis) into a single integrated system. The controller consolidates data from all devices to compute flexural rigidity, achieving comprehensive parameter measurement while managing device complexity through integrated control architecture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables immediate measurement of flexural rigidity without size processing, improving reliability for printing conditions and design tests by measuring parameters like moisture, ash, basis weight, and thickness simultaneously without moving units.
Implementation Method 1
an oscillating unit that oscillates an ultrasonic wave toward a sheet and a receiving unit that receives the ultrasonic wave that has passed through the sheet
Implementation Method 2
an electromagnetic induction unit that generates electromagnetic induction with respect to a sheet
Implementation Method 3
a light-emitting unit that emits near-infrared light toward a sheet and a light-receiving unit that receives the near-infrared light that has passed through the sheet
Data Source
AI summary
A flexural-rigidity measuring apparatus includes an ultrasonic device including an oscillating unit that oscillates an ultrasonic wave toward a sheet and a receiving unit that receives the ultrasonic wave that has passed through the sheet, an electromagnetic induction device including an electromagnetic induction unit that generates electromagnetic induction with respect to a sheet, and a near-infrared spectroscopic device including a light-emitting unit that emits near-infrared light toward a sheet and a light-receiving unit that receives the near-infrared light that has passed through the sheet.