Calibration of Electrical Resistance to Moisture Content for Beech Laminated Veneer Lumber “BauBuche S” and “BauBuche Q”

Grönquist, Philippe; Weibel, Gianna; Leyder, Claude; Frangi, Andréa

doi:10.3390/f12050635

Cited by 9 publications

(10 citation statements)

References 29 publications

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“…During the measurement, the measurement frequency of the VNA was set to 2.45-6 GHz, and 901 data points were collected each time for the amplitude and phase of the SPs to construct a data set. A total of 16 MC samples were collected; each MC corresponds to three thicknesses (4 cm, 7 cm, and 10 cm, respectively) and three bulk densities (0.198 g/cm 3 , 0.218 g/cm 3 , and 0.238 g/cm 3 , respectively), 144 experiments, and 129,744 data sets. The moisture content data are shown in Table 1.…”

Section: Experimental Designmentioning

confidence: 99%

“…each MC corresponds to three thicknesses (4 cm, 7 cm, and 10 cm, respectively) and three bulk densities (0.198 g/cm 3 ,0.218 g/cm 3 , and 0.238 g/cm 3 , respectively), 144 experiments, and 129,744 data sets. The moisture content data are shown in Table 1.…”

Section: Experimental Designmentioning

confidence: 99%

“…At present, the MC detection technology used for processing tea is mainly divided into the direct method and the indirect method [2]. The direct method determines the MC of the sample by weighing the moisture loss of the sample at a certain temperature [3,4]. The direct method usually includes the constant-temperature oven method and the rapid moisture determination method.…”

Section: Introductionmentioning

confidence: 99%

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Establishing a Prediction Model for Tea Leaf Moisture Content Using the Free-Space Method’s Measured Scattering Coefficient

Yin

Wang

et al. 2023

Agriculture

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The rapid and nondestructive detection of tea leaf moisture content (MC) is of great significance to processing tea with an automatic assembly line. This study proposes an MC detection method based on microwave scattering parameters (SPs). Through the established free-space electromagnetic measurement device, 901 different frequency points are taken between 2.45 and 6 GHz using a vector network analyzer (VNA). The SPs of tea leaves with different moisture contents (5.72–55.26%) at different bulk density and different sample thicknesses were measured. The relationship between frequency, S21 amplitude and moisture content, thickness, and bulk density of tea was analyzed using correlation coefficients, significance analysis, and model construction. Back propagation (BP) neural network, decision tree (DT), and random forest (RF) MC prediction models were established with the frequency, amplitude, and phase of the SPs, thickness, and bulk density of the samples as inputs. The results showed that the RF-based model had the best performance, with determination coefficient (R2) = 0.998, mean absolute error (MAE) = 0.242, and root mean square error (RMSE) = 0.614. Compared to other nondestructive testing processes for tea, this method is simpler and more accurate. This study provides a new method for the detection of tea MC, which may have potential applications in tea processing.

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Section: Experimental Designmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Establishing a Prediction Model for Tea Leaf Moisture Content Using the Free-Space Method’s Measured Scattering Coefficient

Yin

Wang

et al. 2023

Agriculture

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“…To improve dimensional stability of LVL, a few veneer sheets are sometimes placed transverse to the main direction. The LVL product “BauBuche Q” has crosswise-oriented veneers to the main direction [ 41 ]. At around 150 °C, a two-component phenol-formaldehyde (PF) resin is commonly applied in a hot-pressing process.…”

Section: Fabrication Of Engineered Veneer Productsmentioning

confidence: 99%

Bonding Acetylated Veneer for Engineered Wood Products—A Review

2022

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The purpose of this review is to put previous research findings on acetylated wood and the fabrication of veneer-based products in a common context. The first research on wood acetylation was already conducted in the 1920s using wood meal, whereas relevant research on veneer acetylation was published nearly two decades later, during the 1940s. In the years that followed, a great deal of research has been done on both solid wood and composite acetylation. Developments in the 1990s and early 2000s resulted in the creation of commercial products. Nowadays, wood is becoming increasingly popular in construction. Therefore, high-performance materials with high dimensional stability and durability are required. Veneers are thereby of particular relevance because of their propensity to absorb chemicals into even tough-to-treat wood species. However, acetylation alters the bonding properties of wood, which is important for the manufacture of engineered veneer products, especially in load-bearing construction. A large amount of research is now being conducted on the acetylation of veneer, and acetylated veneer products are anticipated in the near future. This study covers the fundamentals of bonding but focuses specifically on veneer acetylation and its fabrication to engineered veneer-based products. The influencing factors of acetylation on bonding are also discussed.

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“…Las mediciones de resistencia eléctrica para la determinación del contenido de humedad de la madera son utilizadas en el monitoreo no destructivo de estructuras de madera (Grönquist, et al, 2021). Igualmente, las propiedades eléctricas de la madera son útiles para la caracterización y el desarrollo de materiales compuestos (Li, et al, 2020).…”

Section: Introductionunclassified

Resistividad eléctrica de la madera de Pinus pseudostrobus, Tabebuia rosea y Quercus scytophylla

Castellanos

Alquicira

González

2022

INNOTEC

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Calibration of Electrical Resistance to Moisture Content for Beech Laminated Veneer Lumber “BauBuche S” and “BauBuche Q”

Cited by 9 publications

References 29 publications

Establishing a Prediction Model for Tea Leaf Moisture Content Using the Free-Space Method’s Measured Scattering Coefficient

Establishing a Prediction Model for Tea Leaf Moisture Content Using the Free-Space Method’s Measured Scattering Coefficient

Bonding Acetylated Veneer for Engineered Wood Products—A Review

Resistividad eléctrica de la madera de Pinus pseudostrobus, Tabebuia rosea y Quercus scytophylla

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