Screw torque traceability control: industrial application

This paper analyses a new screw torque traceability control procedure designed for an operation in a car audio workstation. First the detection score at a Failure Mode and Effects Analysis (FMEA) indicated which process improvement were needed. On the sequence, data was collected to evaluate performance indicators. Finally, specific actions were executed based on the improvement plan. As result, the FMEA detection score improved from 7 to 3, the run rate increased from 12 to 16 products/h and defects caused by improper screwing were eliminated. This research contributes to disseminate a practical application of a screw torque traceability control

Screw torque traceability control: industrial application

This paper analyses a new screw torque traceability control procedure designed for an operation in a car audio workstation. First the detection score at a Failure Mode and Effects Analysis (FMEA) indicated which process improvement were needed. On the sequence, data was collected to evaluate performance indicators. Finally, specific actions were executed based on the improvement plan. As result, the FMEA detection score improved from 7 to 3, the run rate increased from 12 to 16 products/h and defects caused by improper screwing were eliminated. This research contributes to disseminate a practical application of a screw torque traceability control

Flammability assessment of Cerrado plant species

O uso do fogo pode ocasionar danos e benefícios a um ecossistema, sendo essa relação influenciada por dois fatores principais: condições meteorológicas locais e característica do material combustível. Um dos principais fatores que influenciam o processo de combustão é a inflamabilidade dos combustíveis, sendo considerado essencial a compreensão deste para a prevenção de incêndios florestais. Diante disso este trabalho objetivou avaliar o potencial de inflamabilidade das espécies Tabebuia aurea (Silva Manso) Benth. & Hook.f. ex S.Moore, Pseudobombax grandiflorum (Cav.) A. Robyns, Dimorphandra mollis Benth, Chytraculia concinna (DC.) Kuntz, Eriotheca gracilipes (K. Schum.) A. Robyns and Qualea multiflora Mart. do cerrado sensu stricto e indicar as espécies com maior potencial para auxiliar na prevenção de incêndios florestais. O trabalho foi realizado no Laboratório de Pesquisas Florestais no Centro de Monitoramento Ambiental e Manejo do Fogo (CeMAF) na Universidade Federal do Tocantins onde os testes de inflamabilidade foram conduzidos para avaliação do tempo para ignição, da frequência de ignição, duração da combustão, índice de combustão e valor de inflamabilidade dos materiais combustíveis, sendo que para cada espécie estudada, foram efetuadas 50 queimas em epirradiador, cada queima foi constituída de 1 ± 0,1 g de material combustível verde. Com base nos resultados verificou-se que dentre as espécies estudadas a que demonstrou maior índice de inflamabilidade foi a Eriotheca gracilipes, por outro lado, identificou-se que as espécies Tabebuia aurea, Pseudobombax grandiflorum e Dimorphandra mollis são consideradas como fracamente inflamáveis, classificando-as como potenciais para uso na prevenção de incêndios florestais.Fire can cause damage and benefits to an ecosystem, and this relationship is influenced by two main factors: local weather conditions and fuel material characteristics. One of the main factors influencing the combustion process is the flammability of fuels, and its understanding is essential for the prevention of forest fires. Therefore, this study aimed to evaluate the flammability potential of Tabebuia aurea (Silva Manso) Benth. & Hook.f. ex S.Moore, Pseudobombax grandiflorum (Cav.) A. Robyns, Dimorphandra mollis Benth , Chytraculia concinna (DC.) Kuntz, Eriotheca gracilipes (K. Schum.) A. Robyns and Qualea multiflora Mart. of cerrado sensu stricto and to indicate the species with the greatest potential to help prevent forest fires. The work was carried out at the Forest Research Laboratory at the Center for Environmental Monitoring and Fire Management (CeMAF) at the Federal University of Tocantins where flammability tests were conducted to evaluate ignition time, ignition frequency, combustion duration, combustion index and flammability value of the combustible materials, for each species studied, 50 firings were performed in a epiradiator, each burn consisted of 1 ± 0.1 g of green combustible material. Based on the obtained data it was verified that among the studied species the one that showed the highest flammability index was Eriotheca gracilipes, on the other hand, Tabebuia aurea, Pseudobombax grandiflorum and Dimorphandra mollis species are considered to be weakly flammable, classifying them as potential for use in forest fire prevention