Tension Modulus Research Articles

Stochastic modelling of continuous glass-fibre reinforced plastics–considering material uncertainty in microscale simulations

This paper presents a probabilistic micromechanics-based approach to simulate the influence of scatter sources in composite materials as an alternative to deterministic approaches. Focus is given to the effect of microscopic and macroscopic voids, material inhomogeneity induced by manufacturing processes and stochastic fibre patterns on the mechanical properties of continuous glass-fibre reinforced polymer components. Various periodic unit cells of neat resin and embedded fibre clusters are generated with random distributions of the abovementioned scatter sources, while the voids are represented by degrading locally the pristine properties in an element-wise manner. Subsequently, the models are mechanically loaded under transverse tension as an exemplary case and the resulting responses are correlated with the stochastic inputs. In particular, the relative influence of pore size, porosity and fibre/resin interface strength on the transverse tension modulus and strength of unidirectional composites are numerically investigated. The present approach is suggested as a computational efficient but reliable alternative to geometrical representations of imperfection in composite materials.

Axisymmetric large deformation problems of thin shallow shells with different moduli in tension and compression

When materials are in tension or in compression, their mechanical properties are essentially different, however, in existing studies it is generally ignored because of the complexity of the analysis. In this paper, a theoretical study of the problem of axisymmetric large deformation of thin shallow shells with different moduli in tension and compression (bimodular thin shallow shells) under uniformly vertical loading is presented. Based on the Föppl–von Kármán equations of flexible thin plates, the governing equation of the axisymmetric large deformation of bimodular thin shallow shells are established by introducing an appropriate curvature modification term from thin shallow shells and a bending stiffness term from bimodular plates. By selecting the central deflection as a perturbation parameter, the perturbation solution of the axisymmetric large deformation problem is derived using the perturbation method. The applications of variation method as well as the implementation of numerical simulation verify, from the theoretical and numerical perspectives, the correctness of the perturbation solution obtained. This study shows that the introduction of different moduli in tension and compression not only affects the relationship of loads vs. central deflection, but also affects the critical values of the rise-thickness ratio of bimodular thin shallow shells when the snapping phenomenon occurs. In particular, the bimodular effect may accelerate or slow down the occurrence of the snapping phenomenon of thin shallow spherical shells, according to the relative magnitude of tensile and compressive moduli. The work presented here will be helpful to analyze the mechanical response of heavily loaded thin shallow shells with obvious bimodular effect.

Mechanical and energy absorption behaviors of 3D printed continuous carbon/Kevlar hybrid thread reinforced PLA composites

Over the last few years, three-dimensional printing(3DP) technology has evolved to incorporate composite materials. However, using material extrusion (ME) technology, it is still difficult to improve the stiffness with stable elongation and energy absorption of continuous fiber reinforced composites at the same time. This study aimed to 3D print hybrid threads by merging several types of continuous Kevlar and Carbon fibers. Which were created using material extrusion 3D printing to accomplish cooperative ductility and brittleness augmentation. To analyze the mechanical performance and reveal the failure and deformation mechanisms, tension tests, three-point bending tests, and drop hammer impact tests were performed. The proposed hybrids have substantially greater flexural modulus, flexural strength, tension modulus, and tension strengths with absorbed energies than standard single type fiber composites. Crack resistance during impact test of hybrid composites was enhanced by over 91% compared to carbon fiber non-hybrid composites. SEM images of hybrid specimens provided an insight of the failure mechanisms, resulting in stable hybrid composites. Positive hybrid effect further demonstrates its great energy absorption capacity.

Characterization of strength, modulus, and fatigue damage properties of cement stabilized macadam based on the double modulus theory

• Flexural tensile strengths calculated with tensile and compressive differences are reduced by nearly 20 % when compared to those calculated without tensile and compressive differences. • A power function decay model of the tension–compression moduli of cement stabilized macadam was established in the four-point bending fatigue test. • The fatigue damage model of cement stabilized macadam was established and its accuracy was verified. Cement stabilized macadam (CSM) is a mixture created by combining cement as a binding material, water, and various particle sizes of minerals. The cement stabilized macadam material exhibits different moduli in tension and compression due to both its mechanical properties and the mechanical response in the asphalt pavement structure. To explore the strength, modulus and fatigue damage characteristics of CSM under different tensile and compressive modulus, this paper carried out the research. The calculation formulas for flexural tensile strength and tension–compression modulus were derived based on the difference in tension–compression modulus. A four-point bending strength test of CSM was carried out. Four-point bending fatigue tests with varying stress ratios were performed. It reveals deterioration laws of tension–compression modulus during fatigue process. The double logarithmic fatigue equation of CSM, as well as its nonlinear fatigue damage evolution equation, are established based on fatigue life results. The results of an analytical solution for fatigue life of rectangular section beams based on damage mechanics were obtained and compared to the results of four-point bending fatigue tests. The results reveal that the modulus of CSM differs in tension and compression. The calculated flexural tensile strength with the tension and compression difference is nearly 20 % lower than without the difference. The calculation approach that does not account for the difference in tension and compression overestimates the flexural tensile strength of CSM. The tension–compression moduli of CSM exhibit a power function decay law in the four-point bending fatigue processes. In the first stage, the dynamic modulus decays at a steady rate, accounting for 90 % of total fatigue life. The second stage in the life ratio of 0.9 occurs when the decay rate of the modulus rapidly increases and enters the stage of sharp decay. Based on the results of the four-point bending test, the modulus decay model was created. The decay parameter m has an exponential relationship with the stress ratio. The relative errors between the mean values of fatigue life tests and the predicted values of the analytical solutions range from 10.8 to 30.6 percent. The established fatigue damage equation for CSM can better reflect its fatigue damage evolution law. The research findings have great significance to solve the determination of pavement materials parameters based on the difference in tension and compression modulus. It also has a specific reference value for asphalt pavement design theory and calculation method when the varied modulus of tension and compression are considered.

Functionally Graded Thin Circular Plates with Different Moduli in Tension and Compression: Improved Föppl–von Kármán Equations and Its Biparametric Perturbation Solution

The biparametric perturbation method is applied to solve the improved Föppl–von Kármán equation, in which the improvements of equations come from two different aspects: the first aspect concerns materials, and the other is from deformation. The material considered in this study has bimodular functionally graded properties in comparison with the traditional materials commonly used in classical Föppl–von Kármán equations. At the same time, the consideration for deformation deals with not only the large deflection as indicated in classical Föppl–von Kármán equations, but also the larger rotation angle, which is incorporated by adopting the precise curvature formulas but not the simple second-order derivative term of the deflection. To fully demonstrate the effectiveness of the biparametric perturbation method proposed, two sets of parameter combinations, one being a material parameter with central defection and the other being a material parameter with load, are used for the solution of the improved Föppl–von Kármán equations. Results indicate that not only the two sets of solutions from different parameter combinations are consistent, but also they may be reduced to the single-parameter perturbation solution obtained in our previous study. The successful application of the biparametric perturbation method provides new ideas for solving similar nonlinear differential equations.

Theoretical Study on Thermal Stresses of Metal Bars with Different Moduli in Tension and Compression

Extensive studies have shown that engineering materials, including metals and their oxides, will present different mechanical properties in tension or compression; however, this difference is generally neglected due to the complexity of the analysis. In this study, we theoretically analyze the thermal stress of a metal bar with a bimodular effect. First, the common strain suppression method is used to obtain a one-dimensional thermal stress expression. As a contrast with the one-dimensional solution, a two-dimensional thermoelasticity solution is also derived, based on the classical Duhamel theorem concerning body force analogy. Results indicate an important phenomenon that the linear temperature rise mode will produce thermal stress in a bimodular metal bar, whereas there is no thermal stress in the case of singular modulus. If the equilibrium relation is needed to be satisfied, the variation trend between different moduli and different thermal expansion coefficients in tension and compression should be opposite. In addition, the amplitude of stress variation, from the maximum tensile stress to the maximum compressive stress, increases dramatically. There exists an inevitable link between one- and two-dimensional solutions. These results are helpful to the refined analysis and measurements of the thermophysical properties of metals and their oxides.

Variation of mechanical properties of P. edulis (Moso) bamboo with moisture content

This study investigates the variation of bamboo mechanical properties under the effects of varying moisture content (MC). Because of some inconsistencies in international standards, this study places emphasis on the effect of MC on bamboo tension parallel to the fibres. A large experimental study is conducted to address tension and other mechanical properties with the aim of confirming, revising and/or refuting the standard-prescribed relationships for normalising mechanical properties of bamboo at MC = 12%. Mechanical property correction factors are reported for a sample of P. edulis bamboo having MC ranging from 5% < MC < 30%. Strength properties, other than tension, exhibit a trend of increasing strength as MC falls below the fibre saturation point (FSP). Tension strength decreases as MC falls and tension modulus is relatively unaffected by MC. The correction factors identified in this study correlate well with the trends implied by similar factors proposed in international standards although two potential revisions are identified and discussed. The large dataset developed in this study also permitted evaluation of test methods and assumptions used in determining characteristic mechanical properties.Taking the approach of correcting mechanical properties to a standard MC supports efforts for grading large populations of bamboo and can be used to promote partial safety factor design of bamboo.

In English

The interfacial properties (dynamic and equilibrium surface tension, viscosity and elasticity moduli) of chitosan lactate have been studied at the liquid/air interface by the oscillating drop shape method. Isotherms of dynamic surface tension of chitosan lactate are similar to dependences for other polyelectrolyte solutions, in particular for proteins. Chitosan is a weak cationic polyelectrolyte which can change its conformation from a linear rod to a chaotic and compacted coil. Therefore, the experimental dependence of the equilibrium surface tension on concentration of chitosan lactate was analyzed with the adsorption model proposed earlier for proteins. This model accounts the possibility of polyelectrolyte molecules existence in surface layer in n states with different molar surface varying from the maximum value at very low surface coverage by polyelectrolyte molecules to a minimum value at high surface coverage. Good agreement between the calculated and experimental values of surface tension was observed. The dependences of the elasticity and viscosity moduli of chitosan lactate solutions on the drop oscillations frequency are conditioned by the influence of exchange processes both between the surface layer and the bulk solution and in the surface layer itself. An increase of the solution concentration intensifies the exchange processes, and an increase of the oscillation frequency suppresses them. It is shown that the dependence of the surface viscoelasticity modulus of chitosan lactate is extreme in nature with a pronounced maximum. The reason for such behavior is the possibility of changing the molar surface area of the polyelectrolyte at the interface dependent on the amount of adsorption and its structural properties. Attempt of theoretical description of the viscoelasticity modulus within the framework of model accounting mono- or bilayer adsorption did not lead to a satisfactory result, possibly due to barrier adsorption mechanism of chitosan. But bilayer model provide qualitative description of extreme behavior of surface viscoelasticity on concentration. The values of the surface viscoelasticity modulus of chitosan lactate occupy an intermediate position in comparison with the data available in the literature for globular and flexible-chain proteins, that is consistent with their molecular structure. In addition, the work shows the applicability of the adsorption model, developed earlier for proteins in the framework of a nonideal two-dimensional solution theory, for describing the surface properties of other polyelectrolytes. This makes it possible to obtain qualitative and quantitative information about the processes occurring in the systems under study.

Experimental determination of the constitutive properties of a graphite anode layer in lithium-ion batteries using a bending test method

The stress-strain relationship of a dry lithium-ion graphite anode coating has been characterized by a bending test method. The method is based on U-shaped bending of single-side coated electrodes, which enables separate measurements of tensile and compressive properties of the electrode coating. The experiments reveal that the elastic modulus of the anode coating in compression is higher than the elastic modulus in tension and that the compressive stiffness increases with strain level. Contrary, the tensile modulus is approximately independent of strain. The quantitative results for compressive modulus, and in particular the stiffening effect with increasing strain, are believed to be new to the battery research community. The measured stiffness of the anode coating is compared to previously reported results for a cathode coating. It is found that the anode coating is stiffer in compression compared to the cathode coating despite a much larger particle stiffness of the cathode material in comparison to the anode. It is concluded that differences in porosity are the main reason for the observed behavior. The method also successfully captures the hysteresis effects, both in tension and compression, that are present due to the polymeric binder and the evolution of microstructural contacts. Relaxation experiments are as well conducted to characterize the time-dependent properties of the anode coating, and the response is modeled by a Prony series.

Performance analysis of bimodular simply supported beams based on the deformation decomposition method

A deformation decomposition method is proposed to study the basic deformation performance of bimodular simply supported beams, which is validated by the finite element method, the analytical solution of neutral axis height and the opening beam test. The proposed method can not only quantitatively identify tensile, compressive, bending and shear deformation of bimodular structures, but also visualize regions dominated by the above basic deformations. When the tensile-compression elastic modulus differs greatly, a composite beam phenomenon exists in bimodular simply supported shallow beams. Reducing the tensile-compression elastic modulus ratio of the material can make deep beams produce similar characteristics to shallow beams. Highlights A deformation decomposition method suitable for bimodular structures is proposed and validated by the finite element method, the analytical solution of neutral axis height and the opening beam test. The proposed method can not only quantitatively identify the tensile, compressive, bending and shear deformation, but also visualize the area dominated by the above basic deformation. When the elastic modulus of tension and compression differs greatly, a composite beam phenomenon exists in bimodular simply supported shallow beams. Properly reducing tensile-compression elastic modulus ratio of the material can make deep beams possess similar characteristics with shallow beams.

Three-Dimensional-Printed Flexible Scaffolds Have Tunable Biomimetic Mechanical Properties for Intervertebral Disc Tissue Engineering.

The intervertebral disc (IVD) exhibits complex structure and biomechanical function, which supports the weight of the body and permits motion. Surgical treatments for IVD degeneration (e.g., lumbar fusion, disc replacement) often disrupt the mechanical environment of the spine which lead to adjacent segment disease. Alternatively, disc tissue engineering strategies, where cell-seeded hydrogels or fibrous biomaterials are cultured in vitro to promote matrix deposition, do not recapitulate the complex IVD mechanical properties. In this study, we use 3D printing of flexible polylactic acid (FPLA) to fabricate a viscoelastic scaffold with tunable biomimetic mechanics for whole spine motion segment applications. We optimized the mechanical properties of the scaffolds for equilibrium and dynamic moduli in compression and tension by varying fiber spacing or porosity, generating scaffolds with de novo mechanical properties within the physiological range of spine motion segments. The biodegradation analysis of the 3D printed scaffolds showed that FPLA exhibits lower degradation rate and thus has longer mechanical stability than standard PLA. FPLA scaffolds were biocompatible, supporting viability of nucleus pulposus (NP) cells in 2D and in FPLA+hydrogel composites. Composite scaffolds cultured with NP cells maintained baseline physiological mechanical properties and promoted matrix deposition up to 8 weeks in culture. Mesenchymal stromal cells (MSCs) cultured on FPLA adhered to the scaffold and exhibited fibrocartilaginous differentiation. These results demonstrate for the first time that 3D printed FPLA scaffolds have de novo viscoelastic mechanical properties that match the native IVD motion segment in both tension and compression and have the potential to be used as a mechanically stable and biocompatible biomaterial for engineered disc replacement.

Modelling of nonlinear and dual-modulus characteristics and macro-orthogonal cutting simulation of unidirectional Carbon/Carbon composites

Owing to their excellent high-temperature resistance, Carbon/Carbon (C/C) composites have broad application prospects in the aerospace and nuclear thermostructure fields. However, their anisotropic nature makes it difficult to guarantee their surface quality during cutting. Therefore, a detailed understanding of the cutting process is required. This study adopts a macro-orthogonal cutting model of unidirectional C/C (UD-C/C) composites to investigate their cutting forces and cutting defects using the finite element method. First, the nonlinear stress–strain relationship of the UD-C/C composites is determined by considering the fibre orientations in tension, compression, and shear experiments. Second, based on the Jones–Nelson theory, an improved constitutive model that accounts for different moduli in tension and compression is established through a weighted compliance matrix (WCM). Third, a macro-mechanical finite element (FE) model of the orthogonal cutting of the UD-C/C composites is developed based on the Jones–Nelson theory and Hashin–Chang failure criteria. The simulated cutting forces show good agreement with the experimental results for different fibre orientations (0°, 45°, and 90°).

Transformed-section method applied to multispecies glulam timber beams subjected to pure bending

An analytical model, based on the Parallel axis theorem (Steiner theorem) and the procedure of the transformed-section method applied for the evaluation of the elastic moduli of composite timber beams, with different tensile-compressive elastic behavior, is proposed. A comparison between experimental and analytic results has been made on multispecies glulam beams (Pine and Platanus timber), compared with mono-species ones. As well, the work presents the results of a parametric analysis, based on the global modulus and the equivalent moduli in tension and compression.

Зв’язок реологічних властивостей сироватки крові зі станом вегетативної нервової системи при ревматоїдному артриті

Актуальність. Ревматоїдний артрит (РА) належить до найбільш частих запальних хвороб суглобів, і численність таких пацієнтів всюди збільшується, завдаючи величезного медико-соціального й економічного збитку. Важлива роль у патогенезі РА відводиться порушенням функції вегетативної нервової системи (ВНС), стан якої тісно пов’язаний із реологічними властивостями сироватки крові (РВСК). Мета дослідження: оцінити співвідношення «вегетативного паспорта» хворих на РА і вегетативної дисфункції з РВСК при різних варіантах перебігу хвороби. Матеріали та методи. Обстежено 173 хворих на РА у віці від 18 до 79 років (в середньому 46 років), серед яких було 21 % чоловіків та 79 % жінок. Тривалість маніфестації захворювання становила 10 років, серопозитивний за ревматоїдним фактором і антицитруліновими антитілами варіант РА встановлено в 3/4 випадків, позасуглобову (системну) форму хвороби діагностовано в 37 % спостережень. З використанням комп’ютерного тензіометру «PAT2-Sinterface» (Німеччина) визначали поверхневі показники сироватки крові — в’язкість, пружність, натяг, релаксацію й модуль в’язкоеластичності. Результати. «Вегетативний паспорт» визначав інтегральні клініко-лабораторні та інструментальні ознаки РА, при цьому тяжкість вегетативної дисфункції прямо корелювала з темпами прогресування патології суглобів, а у симпатотоніків — з початковими параметрами ревматоїдного фактора в крові й ступенем активності РА. Зміни РВСК супроводжувались збільшенням рівноважного (статичного) поверхневого натягу, що реєструвалося в 70 % випадків. Інтегральний стан міжфазної активності, релаксаційних та в’язкоеластичних характеристик крові визначав тип ВНС і наявність у хворих вегетативної дисфункції (ваготонікам властиві підвищення модуля в’язкоеластичності й зниження поверхневого натягу, симпатотонікам — підвищення поверхневого натягу та зниження поверхневої в’язкості). Параметри РВСК пов’язані з вираженістю вегетативних розладів, а показник поверхневої в’язкості має прогностичну значущість. Висновки. Розвиток вегетативної дисфункції пов’язаний не лише з особливостями перебігу суглобового синдрому і екстраартикулярних ознак РА, а й зі станом ВНС, що бере участь в порушеннях РВСК. У майбутньому буде корисною оцінка стану ВНС для подальших своєчасних реабілітаційних заходів щодо захворювання.

Large Deformation Problem of Bimodular Functionally-Graded Thin Circular Plates Subjected to Transversely Uniformly-Distributed Load: Perturbation Solution without Small-Rotation-Angle Assumption

In this study, the large deformation problem of a functionally-graded thin circular plate subjected to transversely uniformly-distributed load and with different moduli in tension and compression (bimodular property) is theoretically analyzed, in which the small-rotation-angle assumption, commonly used in the classical Föppl–von Kármán equations of large deflection problems, is abandoned. First, based on the mechanical model on the neutral layer, the bimodular functionally-graded property of materials is modeled as two different exponential functions in the tensile and compressive zones. Thus, the governing equations of the large deformation problem are established and improved, in which the equation of equilibrium is derived without the common small-rotation-angle assumption. Taking the central deflection as a perturbation parameter, the perturbation method is used to solve the governing equations, thus the perturbation solutions of deflection and stress are obtained under different boundary constraints and the regression of the solution is satisfied. Results indicate that the perturbation solutions presented in this study have higher computational accuracy in comparison with the existing perturbation solutions with small-rotation-angle assumption. Specially, the computational accuracies of external load and yield stress are improved by 17.22% and 28.79% at most, respectively, by the numerical examples. In addition, the small-rotation-angle assumption has a great influence on the yield stress at the center of the bimodular functionally-graded circular plate.

A bimodular nonlinear constitutive equation for rock

Experimental data for the strains and stresses is obtained for some classes of rock, for the compression and tension of a cylindrical sample without lateral loads, and for the triaxial load of a bar. A nonlinear constitutive equation is proposed to fit the data, wherein the infinitesimal strain tensor is assumed to be a nonlinear function of the stress tensor. The constitutive equation requires two sets of materials constants, namely the Young’s modulus and Poisson ratio in tension and compression. Some boundary value problems are studied to see the predictions of the above constitutive theory.

Mechanical Properties of Barley Straw/HDPE Composites Produced with Extrusion Process

This paper is devoted to the study of the technological process for the production of tape from polyethylene and wood-polymer composite by extrusion. At the first stage, the wood-polymer composite granulate was obtained on a co-rotating twin-screw extruder. The tape was made on a Rheomex 19/25 PolyLab OS single-screw extruder with a barrel length L/D = 25. The processing temperature of the wood-polymer composite was in the range of 145 ... 160°C. The tensile strength and elasticity modulus in tension, water absorption per day and density were investigated for the developed wood-polymer composite and polyethylene. It has been found out that for the developed wood-polymer composite, the strength and elastic modulus along the stretch direction increase by 11% and 6%, respectively. Orientation stretching has a significant effect on the physical and mechanical properties of wood-polymer composites.

Birthing of a daughter vesicle in a model system for self-reproduction vesicles

Sakuma and Imai [Phys. Rev. Lett. 107, 198101 (2011)] established a temperature-controlled cyclic process for a model system of self-reproducing vesicles without feeding. The vesicle generates a smaller inclusion vesicle called “daughter vesicle” inside the original vesicle (we call this “mother vesicle”) and then the daughter vesicle is expelled through a small pore on the mother vesicle. This self-reproducing process is called birthing. In the present study, we present a theoretical model on the birthing process of a single, rigid daughter vesicle through a pore. By using a simple geometric picture, we derive the free energy constituting the material properties of the bending, stretching, and line tension moduli of the mother vesicle, as a function of the distance between the centers of the daughter and mother vesicles, and the size of the daughter vesicle. We see clearly the disappearance of the energy barrier by selecting appropriate moduli. The dynamics of the system is studied by employing the Onsager principle. The results indicate that translocation time decreases as the friction parameter decreases or the initial size of the daughter vesicle decreases.

Estimation of tensile strength and moduli of a tension compression bi modular rock

The Brazilian test has been widely used to determine the indirect tensile strength of rock, concrete and other brittle materials. The basic assumption for the calculation formula of Brazilian tensile strength is that the elastic moduli of rock are the same both in tension and compression. However, the fact is that the elastic moduli in tension and compression of most rocks are different. Thus, the formula of Brazilian tensile strength under the assumption of isotropy is unreasonable. In the present study, we conducted Brazilian tests on flat disk-shaped rock specimens and attached strain gauges at the center of the disc to measure the strains of rock. A tension-compression bi-modular model is proposed to interpret the data of the Brazilian test. The relations between the principal strains, principal stresses and the ratio of the compressive modulus to tensile modulus at the disc center are established. Thus, the tensile and compressive moduli as well as the correct tensile strength can be estimated simultaneously by the new formulas. It is found that the tensile and compressive moduli obtained using these formulas were in well agreement with the values obtained from the direct tension and compression tests. The formulas deduced from the Brazilian test based on the assumption of isotropy overestimated the tensile strength and tensile modulus and underestimated the compressive modulus. This work provides a new methodology to estimate tensile strength and moduli of rock simultaneously considering tension-compression bi-modularity.

Exploration of cassava clones for the development of biocomposite films

&lt;abstract&gt; &lt;p&gt;Due to the growing interest in developing bioplastic films from renewable sources, the performance of biocomposite films produced of native starch from cassava clones reinforced with cassava bagasse was explored. The biocomposites were prepared from the starch of cassava clones MMEXV5, MMEXV40, and MMEXCH23, reinforced with bagasse at 1%, 5%, and 15%. Their structural, mechanical, and thermal properties were subsequently assessed. When analyzing the starch, differences in the intensities of the Raman spectra exhibit a possible variation in the amylose-amylopectin ratio. In the biocomposites, the bagasse was efficiently incorporated into polymeric matrixes and their thermogravimetric analysis revealed the compatibility of the matrix-reinforcement. The starch films from the MMEXV40 clone showed better tension (2.53 MPa) and elastic modulus (60.49 MPa). The assessed mechanical properties were also affected by bagasse concentration. Because of the above, the MMEXV40 cassava clone showed potential to develop polymeric materials, given its tuberous roots high yield, starch extraction, and good performance in its mechanical properties. At the same time, the starch source (clone) and the bagasse concentration interfere with the final properties of the biocomposites.&lt;/p&gt; &lt;/abstract&gt;