Claim · model-written summary
Natural frequency correlated with firmness at 0.856.
- Taxon
- watermelon
Citrullus lanatust0 - Outcome
- firmnesse0
- Value
- 0.856e0
- Comparator
- natural frequencye0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The correlations between the natural frequency and firmness was 0.856”
t0“watermelon”
Title
Determination of acoustic vibration in watermelon by finite element modeling
Jamal Nourain; Yibin B. Ying; Jianping Wang; et al. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2004. doi:10.1117/12.576953
Other claims from this paper (10)
- Association The firmness index depends on mass, density, and lowest spherical-mode frequency.
- Method / resource The developed index extends firmness estimation from spherical to ellipsoidal produce.
- Method / resource Finite element analysis produced four watermelon vibration mode shapes.
- Observation The four mode shapes were two longitudinal modes, breathing or compression, and flexural or torsional.
- Association The first spherical or oblate-prolate mode is the lowest bending mode and likely related to firmness.
- Method / resource Finite element and experimental modal results agreed in mode shape and natural frequencies.
- Recommendation The authors recommend locating excitation and sensors far from nodal lines and aligning sensors with vibration.
- Association Natural frequency correlated with Young's modulus at 0.800.
- Association Natural frequency correlated with stiffness factor at 0.862.
- Method / resource The stiffness factor was considered adequate for evaluating modulus of elasticity and fruit firmness.