PATENT CLAIM ANALYSIS

Application Number: 15877932
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-09
Patent Classification: ["073", "833000"]

Abstract:
Test fixture grips for testing quasibrittle materials, such as fiber-polymer composites are provided having increased mass and stiffness relative to standard test grips to provide for obtaining postpeak measurements. The design is based on static analysis (using the second law of thermodynamics), confirmed by dynamic analysis of the test setup as an open system. Dynamic analysis of the test setup as a closed system with PID controlled input further indicates that the controllability of postpeak softening under CMOD control is improved not only by increasing the grip stiffness but also by increasing the grip mass.

Claim (Index 5):
A method for designing grips having a mass and a stiffness for a linear fracture testing machine for testing specimens having a negative incremental stiffness (K s <0) during fracture propagation comprising inputting the incremental stiffness (K s <0) of the specimen; the stiffness of the testing machine (K m >0), a mass of the specimen, a mass of the testing machine, a time delay of the testing machine, and PID parameters for the combination of the testing machine, grips and specimen, and solving [ - \u03bb 1 0 0 0 - 1 m \ue89e ( K g + \u2202 K s \u2202 x 1 ) - \u03bb K g m 0 0 0 0 - \u03bb 1 0 R 1 - \u03b2 \ue89e \ue89e K M M R 2 - K M \ue89e \u03c4 M - Km \ue89e \ue89e \u03b3 M - \u03bb 1 0 0 0 - \u03bb ] ( 28 ) R 1 = K g - \u03b1 \ue89e \ue89e K M M + K M \ue89e \u03c4 M \ue8a0 [ \u03b3 + \u03b2 \ue89e \u2202 K s / \u2202 x 1 + K g m ] ( 29 ) R 2 = - K M + K g M + \u03b2\u03c4 \ue89e \ue89e K g \ue89e K M mM ( 30 ) so that the eigenvalues are strictly negative to determine the mass and stiffness of the grips.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 86.0
- Lexical Diversity: 1.41667
- Patent Class: 73.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['10387095', '12823743', '14915659', '15120266', '12525496']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.619057458204756
- 35 USC 102 Novelty (BERT): 0.477406117658485
- Combined Prediction Score: 0.604892324150129
- Mean Citation Score: 139.66474399999998
- Max Citation Score: 144.06456
- Similarity Product: 101.44058134134292

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test