Analysis of Mechanical Behavior through Digital Image Correlation and Reliability of Pinus halepensis Mill.
Abstract
:1. Introduction
1.1. Wood as Constructive Material
1.2. Mechanical Properties
1.3. DIC Technique
1.4. Reliability
2. Materials and Methods
2.1. Materials
2.2. Equipment and Methodology
2.3. Displacement Analysis
2.4. Strain’s Calculation
2.5. Obtaining the MOEc and MORc
2.6. Assessment of Reliability Using the Weibull Modulus Based on Compression Strength Data
2.7. Macroscopic and Microscopic Study
3. Results and Discussion
3.1. Determination of Reliability
3.2. Macroscopic and Microscopic Study
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Tree (Serial) | Basal Diameter (m) | Normal Diameter (m) | Height (m) | No. log |
---|---|---|---|---|
A | 0.47 | 0.45 | 15.80 | 4 |
B | 0.52 | 0.50 | 14.70 | 4 |
CANON EOS 5D MARK II | |||
---|---|---|---|
Sensor type | CMOS | Video size | 1920 × 1080 px |
Sensor size | 24 × 36 mm2 | Video frames | 25 fps |
Image size | 5616 × 3744 px | Video type | MOV |
Total pixels | 22 Mpx | Lens magnification | 1.0 × (life size) |
Image type | RAW | Dimensions | 152 × 113.5 × 75 mm |
Parallel Compression of Fibers | |||||
Samples | MORc (MPa) | MOEc (MPa) | Standard Deviation MORc (MPa) | Standard Deviation MOEc (MPa) | |
Average A | 19 | 47.39 | 9072 | 3.53 | 2304 |
Average B | 18 | 54.23 | 10,348 | 3.80 | 1940 |
Total Average | 37 | 50.72 | 9693 | 5.00 | 2202 |
Samples | Density (kg/m3) | Standard Deviation density (kg/m3) | Ring width (mm) | Standard Deviation ring width (mm) | |
Average A | 19 | 561 | 33 | 3.04 | 0.61 |
Average B | 18 | 597 | 34 | 2.93 | 1.30 |
Total Average | 37 | 579 | 38 | 2.99 | 1.00 |
MORc (MPa) | MOEc (MPa) | |||
---|---|---|---|---|
Total (37 samples) | Linear regression | R² | Linear regression | R2 |
Density (kg/m3) | y = 0.0972x − 5.5492 | 0.541 | y = 16.582x + 95.762 | 0.0812 |
Ring width (mm) | y = −2.1901x + 57.101 | 0.1585 | y = −879.66x + 12,256 | 0.1319 |
Linear Regression | R2 | Characteristic Strength (MORc) | Weibull Modulus |
---|---|---|---|
y = 11.380 x − 45.169 | 0.9578 | 52.94 | 11.380 |
y = 11.915 x − 47.283 | 0.9514 | 52.90 | 11.915 |
y = 12.362 x − 49.047 | 0.9440 | 52.85 | 12.362 |
y = 12.072 x − 47.900 | 0.9490 | 52.87 | 12.072 |
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Villarino, A.; López-Rebollo, J.; Antón, N. Analysis of Mechanical Behavior through Digital Image Correlation and Reliability of Pinus halepensis Mill. Forests 2020, 11, 1232. https://doi.org/10.3390/f11111232
Villarino A, López-Rebollo J, Antón N. Analysis of Mechanical Behavior through Digital Image Correlation and Reliability of Pinus halepensis Mill. Forests. 2020; 11(11):1232. https://doi.org/10.3390/f11111232
Chicago/Turabian StyleVillarino, Alberto, Jorge López-Rebollo, and Natividad Antón. 2020. "Analysis of Mechanical Behavior through Digital Image Correlation and Reliability of Pinus halepensis Mill." Forests 11, no. 11: 1232. https://doi.org/10.3390/f11111232